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    SM-226L-3Q Seco-Larm Overhead Door Mount N.C. Magnetic Contact w/ 3 Wires for N.O./N.C. Applications
    SM-226L-3Q Seco-Larm Overhead Door Mount N.C. Magnetic Contact w/ 3 Wires for N.O./N.C. Applications
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    • Load image into Gallery viewer, SM-226L-3Q Seco-Larm Overhead Door Mount N.C. Magnetic Contact w/ 3 Wires for N.O./N.C. Applications
    Seco-Larm

    SM-226L-3Q Seco-Larm Overhead Door Mount N.C. Magnetic Contact w/ 3 Wires for N.O./N.C. Applications

    4.7
    €50,00
    €50,00
    €82,00
    Sold out
    Save 39% (€32,00)
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    Description

    • SM-226L-3Q Seco-Larm Overhead Door Mount N.C. Magnetic Contact w/ 3 Wires for N.O./N.C. Applications
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    Customer Reviews

    Great SwitchWorks great if you do better than me and wire it correctly the first time. Thanks to whoever put the following out there:When the door is closed, there is continuity between Black/GreenWhen the door is open, there is continuity between Black/Red 5Well made. Fast Delivery. I mounted it over ...Well 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. 5Industrial heavy duty simplicity!This sensor was the perfect choice for sensing when my roll up garage door is completely secured.What I like the most is that this model supports both Normally Closed and Normally Open systems; There are three wires, red/black/green.When the door is closed, there is continuity between Black/GreenWhen the door is open, there is continuity between Black/RedIn my application I discarded the red wire and have a raspberry pi send a text notification when the door is opened unexpectedly. The activation range is very good, over two inches. This prevents false alarms when the wind blows against the overheard door and it moves slightly. 5These are great!I 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 they'll last for years. These are cheaper elsewhere, but without prime shipping. 5Impressed so far... then disappointment.I was constructing an alarm for my shed and I initially bought some crappy Chinese magnetic contact switches that would "stick" even when the magnet was reintroduced. So in frustration I ordered these that cost several times more, but worth every penny so far.Update: 2 months in and one has began to "stick" in the demagnetized state even when the magnet is reintroduced and directly touching it. These had such good reviews. 2Good switch for electronic security monitoring across large gaps.Armored cable and included magnet bracket make this switch well suited for garage doors and other applications that may have large gaps when closed. Both normally closed and normally open connections are provided for compatibility with all systems. I've had one installed for several years with no issues. 5High Quality (and high price)So, 5 stars for quality, but yikes, $20 for a magnet sensor, so 4 stars for value. Anyway, I bought a Nexx garage door wifi control which is just a repurposed $5 Sonoff control with a very cheap magnetic sensor for reporting door position, but it also has a fairly good app (so you pay for the app I guess). Read the reviews on the Nexx, a large number talk about it working and then not, becaue the position sensor stops reporting correctly. and that's because It needs an 1/8" gap on a garage door. On my wobbly old door you're never going to get that consistency; so Sentrol to the rescue with their 2 inch gap. This sensor is industrial quality. Buy a "LeMotech ABS Plastic Dustproof Waterproof IP55 Junction Box," cut the cord on the cheap magnet, and splice it into the Sentrol inside this box. Two day shipping, problem solved. Oh, and use the black and green wires from the Sentrol for this application. 4The "Enforcer" does the jobThis is exactly what I needed for my garage door sensor. I had tried a simple reed switch, like one would use on a window, but it just wasn't up to the task. This item is much hardier, and the results are more predictable - meaning no more false readings.I mounted the switch at the top of my overhead door. Because of limited mounting surface on the wall and clearance requirements on the door, I was not able to line up the magnet with the switch. But even with at 50% overlap, it reads correctly.If you are setting up a door sensor that you want to work well for a long time, this is the switch you need. 5Very high quality and durableVery high quality alarm contact with an all metal body and nice metal wrapped cable. I ve used many of these in my past job and never had one fail in and industrial or residential application. It s definitely one of the highest quality alarm components I ve encountered. I would recommend it to anyone who wants a rugged contact. I ve paired them with the dry contacts on Honeywell wireless sensors to create a wireless option as well. 5This is the way these things should all beThis is a great switch. The switch part is both lightweight and extremely tough; the magnet part is easy to mount and also light. The activation distance is around two inches that makes for finding a nice mount point easy. Additionally, the magnet can be reversed on the mount if you need a little more distance for a weird mounting spot. The armored cable protects the signal wires, so if you run over it with the car it will still work. Since it has normally open and normally closed outputs, it will work in any wired alarm application.Really nice device. 5
    SM-226L-3Q Seco-Larm Overhead Door Mount N.C. Magnetic Contact w/ 3 Wires for N.O./N.C. Applications

    SM-226L-3Q Seco-Larm Overhead Door Mount N.C. Magnetic Contact w/ 3 Wires for N.O./N.C. Applications

    4.7
    You can't add more than 500 quantity.
    €50,00
    €50,00
    €82,00
    Sold out
    Save 39% (€32,00)