Contact sensor that provides concealed protection for a door or window.
- Features a tapered cylinder for easy and flush fit
- Includes self-contained transmitter, reed sensor, battery & recessed magnet
- Features a standard white plastic case; brown cases available (5818BR); plastic cover-up plug included
- Use 7/8" drill bit for transmitter
- Use 1/2" drill bit for magnet
– Transmitter: 13/16" diameter, 4-7/8" long
– Magnet: 1/2" diameter, 1-3/4" long