



SM-226L-3Q Seco-Larm Overhead Door Mount N.C. Magnetic Contact w/ 3 Wires for N.O./N.C. Applications (One Pack)
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P. Dudek
> 3 dayPerfect switch to be used in a basic DC electronic circuit that detects if the garage door is opened or closed. Provides a visual piece-of-mind that the door is closed,
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Greg
> 3 day10/10 would bang
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Terry
Greater than one weekHad one installed, but it split in half from winter weather freezing it
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E. Stoehr
> 3 dayWell made. Fast Delivery. I mounted it over my garage door on the wall and the Magnet bracket to the door. Will last forever up there. It has a strong magnet and activates when the Garage door opens an inch. Hooked to to a low volt LED light inside the hall leading to/from garage. Lites the way! And warns if garage is ope.
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Customer Service Anyone?
Greater than one weekI installed two of them on my garage doors in series with my thermostat to turn off the garage heater when the doors are opened. The install was a breeze (used the black and green for n.c.) and they work flawlessly. The pieces seem to be of pretty good quality, and I assume theyll last for years. These are cheaper elsewhere, but without prime shipping.
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Sheridan Stokes
> 3 dayUsing as a sensor with a Raspberry Pi. Working perfectly so far. Straightforward install.
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Richard K.
> 3 dayGood experience. No problems.
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stephen
> 3 daythis shipped really fast worked perfect and was a more heavy duty design than the one it replaced.
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Jim Breeher
> 3 dayI used these switches to put indicator lights in the house so I would know if the garage doors are open or closed. I have used a wireless type of system before, but many times got error message. These wired sensors were installed on top of wall above garage door with magnetic on the door. I wired them to a green light for close and red light for open for each door, using the N/C and N/O contact to turn on the correct light. They worked great and now have a wired system to make sure garage doors are closed.
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Dean
Greater than one weekjust didnt work for me... to bulky and couldnt find a way to mount it for what I was trying to do. Quality seems good, although id like them to discuss the quality of the switch since that part is hidden.