Honeywell Home 5818MN Recessed Door/Window Transmitter is a magnetic contact sensor that provides concealed protection for doors or windows. With its tapered design and at nearly half the size of standard transmitters, the 5818MN is another example of how Honeywell Home wireless technology is continually evolving to meet customer needs.
- Includes self-contained transmitter and reed sensor
- Virtually disappears once installed
- Easy replaceable AAA Alkaline battery
- 0.5" gap (transmitter to a magnet)
- Features a tapered cylinder for an easy and flush fit