Honeywell HONEYWELL 5818MNL Honeywell Ademco 5818MNL Reces
$34.99
$47.68
27% off
Reference Price
Condition: New
Top positive review
4 people found this helpful
Unique application for this recessed door switch.
By Oh-Well-Darn on Reviewed in the United States on March 13, 2018
Plan on using this as an earthquake detector for triggering a water main shut-off valve. This Ademco switch will work with my Z-Wave enabled security system to trip a Z-wave controlled water shut-off valve if there is any earth movement. Magnet will be mounted to hang above the switch to keep it closed unless their is an earthquake. If the earth moves the magnet will swing and open the switch. This will be the condition to trigger the closure of the water main valve. If any pipes are broken below or inside the house during a major California earthquake no water should flow inside the home. Water main shut-off valve will also close automatically if there is a power outage which could also occur during a major event like an earthquake. A small 9VDC or 12VDC battery or other power source applied to the valve will open the valve even during a full-blown extended power outage.
Top critical review
4 people found this helpful
Poor Product Quality
By Splitshaft on Reviewed in the United States on October 25, 2018
Sometimes you get what you pay for, but not with Honeywell products. More often than not they will fail shortly out of warranty so having to keep buying these poorly made parts to maintain a Honeywell system becomes a money pit. Honeywell makes a bottomless pit of products you pour money into like this 5818MNL transmitter. The good thing is you'll never need to replace the battery before needing to replace the whole transmitter assembly. At least you can use the old plastic shell to install the new transmitter into saving the time of re-drilling doors and door jambs. Pay a lot of money and get a little bit of quality or none at all with Honeywell.
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