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    Intermatic K4253 208-277-Volt Thermal Photocontrols with Stem and Swivel Mounting
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    Intermatic

    Intermatic K4253 208-277-Volt Thermal Photocontrols with Stem and Swivel Mounting

    4.0
    €77,00
    €77,00
    €126,00
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    Save 39% (€49,00)
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    • Tracked Shipping on All Orders
    • 14 Days Returns

    Description

    • Industrial Electrical Supplies
    • Country of manufacture: China
    • Manufacturer: Inerratic
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    • All customers are entitled to a return window of 14 days, starting from the date of delivery of the product(s).
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    Customer Reviews

    Failed in two months like some others have had happen Failed in two months like some others have had happen. When I looked at it, I found that it was wet inside. The joint at the base was not well sealed. I would recommend checking the seam and using some silicone sealer on it if it looks bad.... I am going back to the Tork 2021 that worked for over 8 years in the same location. 1Works great! So far so good. My 20 year old K4221 died, and this was an exact replacement.I have a lot of ambient outdoor city light (cars, street lights, etc), and so I pinned a small piece of electrical tape under the adjustable metal shutter to greatly reduce the amount of light this photocell receives. Now my lights automatically turn on at "bright dusk" and turn off at "bright dawn".This results in my outdoor lighting costs being reduced by roughly 50%, and so this will very quickly pay for itself.Finally, I'd like to send out a special note of appreciation to the engineers of this device (who may be approaching retirement by now). When my 20+ year old K4221 failed, the lights were "stuck on". This is great, because in my situation, having the lights off after dark is a danger. Furthermore, in 20+ years through very hot and very cold weather, it never ever leaked. A+ for design. 5Intermatic K4221C 120-Volt Stem and Swivel Mount Photo Control I have tried several different photo light controls on my back porch light. Few would work at all as my porch doesn't get much sunlight and they would stay on. The ones that did work didn't last very long, that is until I put the Intermatic in. It works great and has been going strong for a while now, no problems at all. 5Some Technical Points I called Intermatic company to answer some technical questions. I listed those and a couple other pieces of technical information here.1) If you are using LEDs or low wattage compact florescent (pigtail type bulbs) they highly recommend ONLY using Photocontrol unit EK4236s. LEDs should definitely not be used with the K4221c noted on this page because they will quickly damage/destroy it.2) Regarding the sliding piece of metal that acts to limit light affecting the sensor: You want to slide it over the sensor to decrease sensitivity. For example, if your photocontrol is being activated too easily you want to try covering the sensor in varying positions. Experiment to find the best position to limit unwanted turning off and on of the devices or lights connected to the photosensor.3) Ideally, you always want to point the sensor to the north. You will have fewer problems with the photosensor if you can do that.4) When the sensor fails, it will fail so that it stays on or gives continuous power to devices that it is connected to. 5Long lasting and reliable photo control unit Before using this particular model I had used the Westek SW103CT and the TORK 2021 photo controls. Both of these models failed after 1 to 3 months of operation so I'd stay away from them.The Intermatic K4251 which I last installed a year ago is still functioning correctly, as such I've purchased a "backup" just in case and can recommend this particular unit. My installation of the unit is right under the roof eaves and so the unit is sheltered and never gets direct rain water on it. I live a few miles from the ocean and we do get early morning fog, but it's usually very light and lifts rather quickly during the day. So I'm not sure if the units that failed on me failed because of the electronics or the sealing of the units. However, a 1 to 3 months of operation before complete failure was not acceptable and I was considering just going with a mechanical timer scheme before installing the Intermatic unit which appears to be holding up very well. 5Intermatic Engineers Conquer The Control of Lights- on Planet Earth. My application is controlling the 120 VAC line into the primary of a 12 Volt DC output- switching power supply- that runs outside LED 12 VDC yard lights. I get these LED lights in all configs and am having a ball simulating Disneyland and entertaining the racoons at midnight. The intermatic guys say that this will control the 120 VAC into the open-frame switching power supply. This has a thermal relay control of the output- so the contacts- like an EM relay -do not care if the load is inductive, resistive, capacitive ( intermatic tech talk)- rather than a typical electromagnetic actuated relays- that would be too fast - chatter-internally. The Intermatic thermal controlled relay gives a SLOW on-off control, of several minutes to change states- on or off- so that headlights and other transient light sources, e.g. lightening do not 'flicker the controller on and off'. This slow design, works well and MAKE SURE that there is enough light to the sensor, if you are concerned that the controller turns off at 'first light' and not too late in the morning, give it plenty of light- face the cadmium sulfide cell direct North, aim it- no shade in the way. If you do not face it to the NORTH to collect the sunlight- the lights may be late turning off - or turn on early- for lack of direct North light from the sun. Watch out for trees, shading from bushes, overhang eves. ( not the GW Bushes). Remember that when first powered with 120 VAC- that it takes up to several minutes for the thermal relay to respond-and transfer-( it is a heated thermal relay that takes time to gain and lose heat that controls the bimetallic element in the relay- On to Off condition- so untwist your underwear- and don't get a wedgie- be patient cowboys and cowgirls. The cycle takes forever-if you have ADHD or such. Breathe slowly and meditate, think happy thoughts. This is how those smart Intermatic engineers designed it to operate- SLOWLY. Three wires come out of the plastic housing: Black is Hot (line 120 VAC High side), White, neutral wire and a red wire- which is the light-controlled 120 VAC line output to the load. If you don't know what that means- you can hurt yourself- fooling around with 120 VAC wiring ( that is 336 Volts 'peak to peak' which can kill you and you may not be able to let go) - even be killed-and should call a certified electrician . Electrocution is not a pretty way to exit this existence, so be safe and live long. Make sure all outside fixtures are grounded, they need GFCI and new arc prevention devices to keep your family safe and happy, so that the metal post- or some other part-does not kill somebody when it is raining. Serious stuff, not for beginners. Follow your building department's rules and recommendations and have wiring inspected by a certified licensed electrician. 5Works, but relatively short lifetime Good for use along with a timer for transformers for low-voltage outdoor lighting. Sensor will allow lights to come on at dusk and timer will turn them off at bed time (vs. leaving on all night). With extra wiring, sensor can be placed away from the transformer for access to the sun.The down side is that these sensors have a relatively short lifetime. Usually I get 2 - 3 years of out of them before they fail (stuck ON), but one I just bought failed in 2 months. They have a five year manufacturer's warranty, but the shipping cost and effort of Intermatic's warranty return process isn't work it, and Intermatic blew me off when I tried to get them to send me a new one without shipping back the old one for the unit that failed in 2 months.Do follow the instructions to point it toward the north, vs. directly toward the sun; supposedly results in longer life.If I could find a more reliable unit, I would buy it. 4The only thing I don't like is that the instructions are written for an experienced ... If you know anything about elex work, you can install this fairly quickly. The only thing I don't like is that the instructions are written for an experienced electrician. If the mfgr. expects average homeowners to understand how to install it, they must improve the instructions. I had no problems at all, but I've been doing this work for many years and understand the procedures and risks. My recommendation to Joe Homeowner is to hire a pro if you are not really certain how to wire it up. 5Replacement Unit for Kichler 15565BK Plug-In Transformer Photocell This is the same photocell sensor used on Kichler low voltage transformers at about one third the price. If this is a replacement sensor for a burned out Kichler unit you'll need to do a bit of splicing to connect it to the Molex connector. If its a new installation it gets a bit more complicated you'll either need to get a molex connector that mates with the pug o the transformer or convert the "jump" plug that is provided with transformer that aren't equipped with a photocell. Considering the Kichler replacement is about $40 here on Amazon this unit is far more cost effective for someone with basic wiring skills. Search Kichler 15565BK Plug-In Transformer Photocell here on Amazon to view their configuration. I would have posted the link for you but apparently Amazon's "review bots" are filtering even their own internal URL's so my original review got booted back at me! lol! 5Not Built to Last! We had our electrician install a photo sensor roughly 6 years ago so that the exterior lights on our front porch would automatically come on at sunset and turn off when the sun rises. After two years the lights stayed on all day long. So, I ordered the exact model that was originally installed and replaced it myself. This one lasted maybe 3 years but then failed like the one before. In September of 2017 I did the exact same thing AGAIN, with this exact model. Less than 13 months later this has failed yet again. Apparently the model is not built to last. I finally learned my lesson and will be ordering a different model from a different manufacturer and will be hoping for much better results. 1
    Intermatic K4253 208-277-Volt Thermal Photocontrols with Stem and Swivel Mounting

    Intermatic K4253 208-277-Volt Thermal Photocontrols with Stem and Swivel Mounting

    4.0
    You can't add more than 500 quantity.
    €77,00
    €77,00
    €126,00
    Sold out
    Save 39% (€49,00)