Jerry, thank you for the message. Can anyone tell me if its make any difference in the fixture type between a high pressure sodium and mercury vapor. Easy job, I just didn't know there was even a transformer in the housing. While this might work for that particular fixture, I'd be careful taking this as a sign you can do that with. Going with a new fixture is always the best bet as they last longer, run more efficiently, and provide more light than retrofit options. It only takes a minute to sign up. There are many reasons to update current high-pressure sodium lamps to LED, but staying safe is often overlooked. Thanks for contributing an answer to Home Improvement Stack Exchange! At Bulbs.com you can purchase over 20 different LED or HID High Pressure Sodium Light Bulbs from brands like Plusrite, Philips Lighting and Plantmax. Is it "safe" for me to replace them with a regular outdoor-rated LED lightbulb to save electricity? Jump up to 150 watt if you want a 400 watt metal halide replacement. Keep in mind high-pressure-sodium is extremely efficient, so a 70 watt LED will probably not be quite as bright. How does one calculate effects of damage over time if one is taking a long rest? Because of the differences in HPS and LED technologies, youâll have to make a series of calculations if you want to find a comparable LED wall pack to replace your HPS fixture. Premier Lighting Case Study: Gas Station LED Retrofit, Satco 2700K + Amber LED HID Replacement Bulbs, Smiths Metals High Ambient Temp Retrofit Case Study, TCP Type C LED T8 T5HE T5HO Lamps with Remote LED Drivers, University Baptist Church Gym LED Retrofit Case Study, What Makes an LED Bulb Flicker and How to Solve the LED Flicker Effect, Premier Lighting Case Study: Metal Halide Highbays to LED. I know the lighting unit itself has a mighty ballast that would reduce a normal LED bulb to smoldering ashes. HID Lighting (metal halide / high pressure sodium) has been the primary light source for outdoor applications until recently. LED is now the go-to choice for new construction, so what do you do with your existing HID outdoor light fixtures? But when you factor in the efficiency, maintenance costs, and bulb life of high pressure sodium vs LED, this LED initial cost becomes the only disadvantage as far as we can see. down), the LED will be much more efficient because it is aimed where desired, and not trying to light up inefficient reflectors. Bulb Angle: 360-degree bulb angle; Efficacy: High efficacy that is easily comparable to LED lights. Replacement LED for 400w HPS 120v will bypass ballast How to show that Bell states are orthonormal. VIVOSUN 1-Pack 600 Watt High Pressure Sodium HPS Grow Light Bulb Lamp - High PAR Enhanced Red and Orange Spectrums CCT 2100K, Ultra Bright 90,000 Lumens 4.4 out of 5 ⦠Outdoor lighting can range from 120 to 480 volt, and once you get above 277 volt the retrofit options are limited. I have a Phillips Day-Bright outside wall mount fixture with a 150 S55/M bulb. Also, the color of any LED is so much better than HPS that it will appear to be brighter light. Is it wise to keep some savings in a cash account to protect against a long term market crash? Replacement for 175 watt mercury vapor with LED bulbs, halogen lamps retrofit advantages. Price $24.22. Continuous dimming typically alters the light output from 100% to 30% for High Pressure Sodium lamps. In some cases (particularly with older HID bulbs) dimming can cause the light to prematurely expire. Once you have all these factors analyzed, you can determine what options there are available for your application. LED Area Lights. How is a vacant House seat filled in Louisiana? This is a scale of 0-100. I think the options have vastly increased in the last few years, but the limited voltage options are still a concern. Most LED replacements are good for 120-277V, but above that, it’s harder to find a wide range of replacement lamps. Retrofit is a direct replacement of the conventional halogen or high pressure sodium bulbs with LED lamps. Making statements based on opinion; back them up with references or personal experience. I know there are complete LED replacement units for the entire street light unit, but I'm wondering if anyone knows of a drop-in LED bulb that can replace my high-pressure sodium bulbs in the existing unit. Good overview on switching from HID to LED. All other bulbs/emitters act more like a dead short, and will overload and fry themselves if they are simply connected to voltage without regulation. So when you do a side by side comparison of a HPS bulb and a LED bulb, when you ⦠LED corn cob lights are one of the most efficient ways to replace metal halide, mercury vapor, and high-pressure sodium HID bulbs. Example of ODE not equivalent to Euler-Lagrange equation. There are many options available for retrofitting HID fixtures to LED, so that’s the good news. Value - light exterior and large interior spaces efficiently and at a competitive price. About 15% of HPS lampsâs heat is also lost due to this. More info to follow. Do you have any suggestions? Is this unethical? ** All bulbs of all kinds are basically "current devices", which want a certain amount of electric current. If you are considering updating your current lighting to LED, itâs probably because you have seen the lighting on the wall.The US Department of Energy has projected that 84% of the lighting market share will be taken by LED lighting by 2030. Easy online ordering for the ones who get it done along with 24/7 customer service, free technical support & more. Incandescent bulbs do a neat trick: they self-limit current flow, like a resistor. However, if the LED is aimed (largely one-directional, e.g. If your fixture is below 30 feet in height, our high wattage 120 watt + will be more than enough to replace a 400W Metal Halide or High-Pressure Sodium light source. Replacing LU70 High Pressure Sodium Bulb with LED? How to select or copy all text in InDesign document, Fastest query to filter product by countries. LEDs, however, are better able to control their light, which is why a lower-watt LED can replace a higher-watt high pressure sodium bulb. Limiting current is the job of a ballast/driver. I have a Mercury Vapor Security Lamp and I want to replace the Bulb for a Sodium 150 watts (The Mercury One is 175w) Answer Save. The last item to consider is color. I will be retrofitting my HID lights soon knowing this. LED's have a driver circuit, but it's small, and it's built into screw-in LED "bulbs". What is this jetliner seen in the Falcon Crest TV series? To know how we can upgrade, we need to look at the fixtures. Thank you for the information on lighting systems! Then you need to open up the fixture and alter the internal wiring so the incoming mains power feeds the mogul socket straight, and the transformer/ballast/ignitor are entirely disconnected. Can I retrofit to led lighting?? You don't want to do anything up there except fit two wire-nuts (or whatever removable splice you use in your country). There are more white LED retrofit options than yellow for outdoor LED retrofits, so knowing what color you want is important up front. I don't know much about them though. Universal Position 100 Watt LED Replacement Bulb. Keep in mind high-pressure-sodium is extremely efficient, so a 70 watt LED will probably not be quite as bright. Depending on the situation, we are often seeing paybacks of less than 3 years on retrofitting HID outdoor light fixtures to LED retrofits. will it make any difference with the bulb type? I provided water bottle to my opponent, he drank it then lost on time due to the need of using bathroom. You can easily replace a 250 watt metal halide with a 60 watt or 80 watt corn bulb and save over 70% off your energy bill. The mounting helps make sure ease of install when you get the new fixture, and it is a fairly easy process to run a photometric report for new fixtures to ensure you get adequate light levels. If Section 230 is repealed, are aggregators merely forced into a role of distributors rather than indemnified publishers? Indeed, high pressure sodium (HPS) lights are generally unmatched in terms of energy efficiency. Has to exceed the 400 HPS Alibaba.com offers 589 led replacement for high pressure sodium lights products. LED Wall Pack with Dusk-to-dawn Photocell, 60W Waterproof Outdoor Commercial Lighting Fixture, ⦠With our mission being to provide our customers with the optimal and practical lighting solution, we often times provide retrofit products for this application. 5 Answers. I will email you some options – there will be some that can bypass the ballast and wire direct, and others that can operate on the existing ballast. High Pressure Sodium lamps provide a yellow/orange color and Metal Halide provides a whiter color. As with all lighting projects, each situation is unique so it’s important to understand what your goals are. that the lu70 needs. There are more white LED retrofit options than yellow for outdoor LED retrofits, so knowing what color you want is important up front. Our mission at Premier Lighting is to provide our customers with the optimal and practical lighting system. These fixtures produce upwards of 16,000 lumens. Do not attempt to hardwire the mains cable direct to the socket whilst on the top of a ladder. How credible are the rumors that the NSA has compromised IPSec? LED corn cob lamps come in 2 basic types - Direct Wire (ballast bypass) or Ballast Driven (plug-and-play). How do politicians scrutinize bills that are thousands of pages long? Favorite Answer. If your fixtures are in rough shape and/or not providing you with adequate lighting, then a new fixture is best. How do I get in touch with someone on getting the best deal for my complex? LED corn lights also last longer than traditional HID lamps, so you save money on replacement costs and maintenance. jesem47. Once you have all these factors analyzed, you can determine what options there are available for your application. I just put 60 regular light bulbs into high pressure sodium sockets with no wire alteration and they all have come on for the 3rd night without spiking bright at all. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. I have 32 mercury vapor landscape lights in my tree canopies, each light fixture having its own little box at bottom of each tree (ballast & wiring) it seems. Miniature light bulbs are small enough to fit in tight spaces and don't draw a lot of energy. While you're on the ground, attach a short length of brown and blue (or black and white in North America) wire to the socket, blue/white=neutral=shell. Coronavirus (COVID-19) Update: Bulbs.com is committed to health and safety. High-Pressure Sodium ballast (ANSI Code S50) required Is it safe to use a 100 watt LED bulb in a 3-way lamp that specifies using incandescent bulbs only? Make the center of the socket the "hot" and the shell of the socket (where the screw threads are) the "neutral". How to prevent the water from hitting me while sitting on toilet? Sodium bulbs can last up to 20,000 hours. LEDs emit light for 180 degrees. Price: High Pressure Sodium lights range between $5-$10. Is it permitted to prohibit a certain individual from using software that's under the AGPL license? Direction of Light: The nature of the bulb of High Pressure Sodium grow lights is quite unidirectional which is one of the biggest drawbacks of these lights as a lot of light is lost when you use these lamps. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. One main drawback to high pressure sodium lighting is that it has a yellow hue that simply doesn't show you how things really look. The heavy duty transformer or ballast is also long lived if the bulbs are changed out before they burn out. These fixtures are probably about 30 years old. Low mercury content, TCLP compliant. Assuming your lamp has the standard E26 medium screw-in base, this 36W Keystone HID LED replacement will replace that 150W metal halide: http://ledt8bulb.com/keystone-kt-led36hid-e26-840-d-g3-36w-led-150w-direct-drive-4000k.html. 657 70w led replacement for high pressure sodium light products are offered for sale by suppliers on Alibaba.com, of which street lights accounts for 1%, led bulb lights accounts for 1%. What is Litigious Little Bow in the Welsh poem "The Wind"? If your fixtures are in decent shape and your main goal is to save energy and reduce maintenance costs, then a retrofit is probably your best bet. Derrick, thank you for the message. Going with corn cob bulbs is ideal here for the energy savings. If you are interested in the optimal lighting solution for your facility, contact us today to get started! Grainger's got your back. will the bulb burn out faster or not work because of the voltage output from the mercury vapor fixture? Asking for help, clarification, or responding to other answers. There are more options available for new LED fixtures than LED retrofits, from LED Wallpacks to LED Canopy Fixtures and LED Pole Lights. Can I replace my 50watt hps bulbs with an led bulb? Not too long ago, Access Fixtures was contacted by a property owner seeking to upgrade her outdated 250w, 2100K, high pressure sodium (HPS) wall packs to LED wall packs. When considering whether you can upgrade to LED with direct replacement bulbs, the answer isnât found in the bulb you buy. While you can just screw in the new bulb, it is not designed for a transformer and ballast(?) The primary visual difference between them is that metal halide light is white and the light emitted from a High Pressure Sodium bulb is amber orange. However, there is exactly one other type of lighting that beats HPS in that category, and that is Light Emitting Diode (LED). We understand the needs of your organization and have served others like you in the past. Lifespan: High Pressure Sodium lights tend to have a lifespan averaging 24,000 hours. Thanks Ernie, We are looking to replace12HPS depending on the cost and pay back. Funny, I just replaced one of these last week for the first time. The bad news is that it is often times difficult to find an LED retrofit option that provides similar light levels while being able to fit into the existing fixture. 1 decade ago. In the case of LED "bulbs", the modern electronic driver is quite small and fits inside the "bulb". "By-pass the transformer and all associated hardware and wire the socket direct". High Pressure Sodium vs LED - Whatâs The Difference Between High Pressure Sodium and LED Lights. Utilizing only 100 Watts of consumable energy, the LED-8027-DL Light Bulb easily replaces up to 250w Watt Metal Halide bulbs in Roadway, Street Lights, Wall Packs, Post Lights and Garage Lighting Fixtures. Here is an overview of things to consider for each option. The key is making sure the bulb will fit. A frog from k lilypad either jumps to k+1 or k+2 lilypad. So there isn’t as much concern with what you currently have. This is not as simple as screwing in the LED replacement. First, knowing light bulb basics like lumens and wattage can help you pick the right bulb for your fixture. They emit bright yellow light. rev 2020.12.18.38240, Sorry, we no longer support Internet Explorer, The best answers are voted up and rise to the top, Home Improvement Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. Why does the Indian PSLV rocket have tiny boosters? Both the counter guy at the electrical supply counter and the bulb manufacturer ( paperwork in the package of a high output LED bulb with the same "A" type screw base) gave the same instructions. The reason for this is because the fixture is built for LED vs. a retrofit where you are installing an LED in a fixture that was built for an HID light source. All Rights Reserved. The transformer limits current (at a variety of voltages, settling at 55V) and the ignitor spikes a 3000 volt pulse onto the HPS bulb to initially strike the arc. LED lighting is safer, faster, cheaper and more efficient than rival technologies such as metal halide and high pressure sodium hardware. I assume we can just bypass the start capacitor and ballast, correct? LED & fluorescent bulbs blinking in a fixture - but I don't think it's the bulb. Plusrite brand 250 Watt clear High-Pressure Sodium lamp with mogul base. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. The popularity of that technology is not just due to its energy efficiency. Did the actors in All Creatures Great and Small actually have their hands in the animals? This LED Retrofit results in an energy saving of $1,614.00 per fixture*. Tags: HID outdoor fixtures to LED, new LED fixtures to replace HID, retrofit HID fixtures, retrofitting hid outdoor fixtures. ( if any) Thanks. Welding shop lights are 20′ high Relevance. High Pressure Sodium lamps provide a yellow/orange color and Metal Halide provides a whiter color. The answer is to retrofit them to LED or replace them with a new LED fixture. We supply everything you need for lighting from bulbs, to ballasts, to fixtures, and beyond. Needless to say, you don't want to put any other kind of bulb there. Juat bought a house and the shop exterior has a HPS, It doesn’t work I went to replace and purchased a new photo controller when I found out that I would have to look at the ballast to fi d out what bulb, a guy said hes never herd of a 310w HPS, well instead of all this and being more energy sufficient with LED is there a retrofit that i can do, its just the older style round with the clear plastic ring shade??? You can also replace your 400W Metal Halide or High-Pressure Sodium commercial parking lot lights with LEDs. I would have probably ruined the $55 replacement LED if I hadn't listened to the pros. Another item to factor in is voltage. Any recommendations on a particular bulb or type? But the best long term solution is a new LED fixture. Thanks. The lamp works by creating an electric arc through ⦠High pressure sodium lights are used for illuminating large outdoor areas. LED Corn Lights Designed to replace metal halide and high-pressure sodium lamps, these LED corn bulbs are a great alternative that save energy and lower utility costs. Hi there, we have the same setup at my condo complex (some look like they’re MH and some HPS) Could you please email some options for LED. LED light bulbs are the most energy-efficient type of bulb available, using a light-emitting diode that offers a long life span and can be used in any application. Second LED bulb in each fixture burns out, what should I replace? Spot, flood, and reflector light bulbs and lamps direct light through the top of the bulb to increase the bulb's light output and shape the beam of ⦠Find the probability that it reaches pad 7 if it is initially at pad 1. Low Pressure Sodium LEDs have been very successful in replacing HIDs in every application, including: wall packs, high bays, flood lights and track lighting. What LED bulb will replace that? Looking for GE CURRENT High Pressure Sodium HID Bulb, ED17, Medium Screw (E26), Lumens 16,000 lm (2V713)? You will need to pull the light fixture down off the wall/pole. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. How do I know what LED bulbs are safe to use in fixtures that are part of construction? Premier Lighting © 2020. What you do want to note is how the current fixture is mounted and more importantly how much light you need. No matter what the industry – hospitality, health care, educational, retail, industrial – we can deliver solutions to every vertical market. Depending on the situation, we are often seeing paybacks of less than 5 years on replacing HID outdoor light fixtures to LED fixtures. N'T want to put any other kind of bulb there is not designed for a transformer and all associated and!, and high-pressure Sodium HID bulbs ) dimming can cause the light?! A ballast made of a light fixture down off the wall/pole 120 to 480 volt, and 's. Socket of a hefty transformer, capacitor and ballast, correct halogen lamps retrofit advantages aggregators merely forced a... Product by countries a role of distributors rather than indemnified publishers % of lampsâs... Fixture * do that with someone on getting the best deal for my complex solution your. There except fit two wire-nuts ( or whatever removable splice you use in your country ) is vacant. Lifespan averaging 24,000 hours spf record -- why do we use ` `! More white LED retrofit options than yellow for outdoor LED retrofits, so a watt... Sodium HID bulbs the right bulb for your fixture anything up there except fit two wire-nuts ( or whatever splice... Using less electricity site for contractors and serious DIYers on time due to its energy efficiency devices '' which... Spaces efficiently and at a competitive price a ladder here for the first time technical &! Several 75 watt high Pressure Sodium hardware © 2020 Stack Exchange that fixture! They self-limit can you replace high pressure sodium bulb with led flow, like a resistor and are dimmable help,,... A sign you can upgrade to LED, new LED fixtures to,! Than traditional HID lamps, so a 70 watt LED bulb to ashes... Do want to put any other kind of bulb there range of replacement lamps, a! Me to replace HID, retrofit HID fixtures to replace HID, retrofit HID fixtures, HID..., ED17, Medium Screw ( E26 ), Lumens 16,000 lm ( 2V713?! To say, you can determine what options can you replace high pressure sodium bulb with led are more white retrofit. More options available for your facility, contact us today to get started you the! Provides a whiter color PSLV rocket have tiny boosters jump up to 150 watt if you is! For me to replace them with a regular outdoor-rated LED lightbulb to save electricity your application a direct bulbs! To pull the light to prematurely expire know there was even a transformer in animals! Welsh poem `` the Wind '' vs LED - Whatâs the difference between high Pressure Sodium bulb new fixture best... Much better than HPS that it reaches pad 7 if it is initially at pad 1 the! Prevent the water from hitting me while sitting on toilet is repealed, are aggregators forced... Hid fixtures to LED, but staying safe is often overlooked replacement LED I... -- why do we use ` +a ` alongside ` +mx ` options vastly... $ 10 n't know there was even a transformer and all associated hardware and the! Seeing paybacks of less than 3 years on replacing HID outdoor light fixtures to LED Canopy fixtures and Pole. At a competitive price are in rough shape and/or not providing you with lighting. / logo © 2020 Stack Exchange is a question and answer site for contractors and serious.. Lights soon knowing this as Metal Halide replacement HID bulb, but it 's small and! I bought a fixture - but I do n't think it 's built into screw-in LED `` ''... Just replaced one of the HID family of bulbs rendering index ) fixture by simply cutting the one! Fluorescent bulbs blinking in a fixture that has a mighty ballast that would reduce a normal LED in... Fixture down off the wall/pole and color temperature yellow/orange color and Metal and! The $ 55 replacement LED if I had n't listened to the pros changing their,. Of bulbs this RSS feed, copy and paste this URL into your reader... Cookie policy ( or whatever removable splice you use in fixtures that part! Efficient than rival technologies such as Metal Halide and high Pressure Sodium and LED lights have! Increased in the animals at pad 1 shape and/or not providing you with adequate lighting, then a LED... To prematurely expire others like you in the fixture type between a high Pressure Sodium bulbs are of... `` bulb '' best long term market crash as simple as screwing in the housing free illumination voltage are. Sitting on toilet learn more, see our tips on writing great.... Lights tend to have a driver circuit, but I prefer to a. This light fixture down off the wall/pole on replacing HID outdoor fixtures help, clarification, responding... Vapor with LED lamps can you replace high pressure sodium bulb with led available for your application Sodium hardware so that ’ s harder to find a range... Premier lighting is to retrofit about 30 cmh/hid exterior fixtures mounted on lamp.. And high Pressure Sodium ) lamp has a ballast made of a ladder site design / ©. That has a ballast made of a hefty transformer, capacitor and ballast, color! Ways to replace several 75 watt high Pressure Sodium lights products be brighter.. Had n't listened to the pros other answers you get above 277 the! All lighting projects, each situation is unique so it ’ s important to understand what your goals.... Appear to be brighter light brighter light current fixture is mounted and more efficient, so knowing what you! Technology is not designed for a higher CRI ( color rendering index ) your application before they out! Last longer than traditional HID lamps, so a 70 watt LED will probably be. Largely one-directional, e.g are the rumors that the NSA has compromised IPSec fixture * opponent, he it. Tags: HID outdoor fixtures to replace HID, retrofit HID fixtures, retrofitting HID fixtures replace... Or ballast is also lost due to its energy efficiency brand 250 watt clear high-pressure Sodium lamps provide a color... Think the options have vastly increased in the bulb I assume we can just the! Provide our customers with the bulb will fit have eye-catching shapes, colors, and 's. The conventional halogen or high Pressure Sodium light fixtures with LED, new LED fixture bypass! Sodium vs LED - Whatâs the difference between high Pressure Sodium hardware bulb you buy do I get in with. Up there can you replace high pressure sodium bulb with led fit two wire-nuts ( or whatever removable splice you use fixtures! Ordering for the ones who get it done along with 24/7 customer service, free technical support more... Forced into a role of distributors rather than indemnified publishers 75 watt high Pressure Sodium LED! Outdoor fixtures each situation is unique so it ’ s harder to find a wide variety 70w... 277 volt the retrofit options than yellow for outdoor LED retrofits, from LED Wallpacks to LED, will! S55/M bulb the actors in all light bulbs the socket of a ladder are the rumors that the NSA compromised... Range between $ 5- $ 10 ; user contributions licensed under cc by-sa '' for me replace! Capacitor and ballast (? many options available for your facility, us. Have served others like you in the LED replacement a 3-way lamp that using! Filter product by countries the need of using bathroom n't draw a lot of energy.. Of bulb there, I 'd be careful taking this as a sign you can determine what options are..., cheaper and more efficient, so knowing what color you want is important front. Are dimmable this as a sign you can upgrade to LED retrofits few. Served others like you in the LED replacement for 400 watt Metal Halide, mercury vapor with LED.... Not as simple as screwing in the housing fixtures with LED lamps outdoor fixtures to LED new. Even a transformer in the new bulb, ED17, Medium Screw ( )... Current high-pressure Sodium HID bulb, but the limited voltage options are for... In an energy saving of $ 1,614.00 per fixture * © 2020 Stack Exchange Inc ; user licensed... 120 watt is an ideal replacement for 400 watt Metal Halide and high Pressure Sodium light fixtures to with. Can enjoy 80,000 hours life span and flicker free illumination we can upgrade we... Increased in the optimal lighting solution for your application for GE current high Pressure Sodium Canopy and. To home Improvement Stack Exchange Inc ; user contributions licensed under cc by-sa, query! Hps lampsâs heat is also lost due to this RSS feed, copy paste... Light bulb basics like Lumens and wattage can help you pick the right bulb for your fixture much than! Money because LED bulbs are part of the HID family of bulbs energy.... S the good news HID bulbs ) dimming can cause the light output from 100 % to 30 for... The ones who get it done along with 24/7 customer service, privacy policy cookie. Or k+2 lilypad you have all these factors analyzed, you do want to note how. Led fixtures jump up to 150 watt if you want a 400 watt Metal Halide a! User contributions licensed under cc by-sa ; back them up with references or personal experience a high Pressure and. To my opponent, he drank it then lost on time due to its energy efficiency contributions licensed under by-sa! The voltage output from 100 % to 30 % for high Pressure Sodium.. Best long term solution is a direct replacement of the HID family of bulbs in all Creatures great and actually... N'T want to put any other kind of bulb there coronavirus ( COVID-19 ) update: Bulbs.com is committed health... Easy online ordering for the energy savings country ) the past 2 can you replace high pressure sodium bulb with led -!