Honeywell 5818MNL - Wireless Mini Recessed Door Sensor and Window Sensor Reviews

If your application is suitable, I definitely recommend the 5818MNL over the 5811 or similar. My installation was especially easy as the existing hardwire system already used similar wired sensors. For me it was as easy as removing the old sensor, adding about 1-inch of depth to the whole with a 3/4 spade bit and then installng. Done. I plan to use these for all entry and sliding doors.