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

Installed and works perfectly. Mounting bracket for the magnet leaves lots of options. I moved the magnet on all three and trimmed the bracket on two. East to make work for my doors. I installed them on the top of the door with the contact on the overhead door opening.

Worked great for our duckins (ducks and chickens) coop alert. Wired this in to a solar light such that the light is on at night when door is opened so we can see from the house if the coop door is still open before bed. Well made product and would be good for any outdoor reed switch application.

Triggers about 2-3 inches away ! Built really well ! worth it $$

Fit, on a hole for hole basis with whatever model was there before. Made switching the two a 10 minute job. Back in action on the alarm panel.

Great product for the price

Not much to say, but its made well, and should last years. As far as wiring, black is common, green is normally open, and red is normally closed. Pretty straight forward...... Well worth twenty bucks......

Using as a sensor with a Raspberry Pi. Working perfectly so far. Straightforward install.

Had one installed, but it split in half from winter weather freezing it

Worked great

just 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.