Magnetic contact via radio

Features
    Sleek, modern design with long battery life
    Brown color
    Mounting on door or window frames
    Extension terminals for connection to wired devices
    Works as a universal transmitter
    Allows home automation and security systems to turn on / off appliances
    Powerful magnet allows total side-to-side separation distance of 28mm
    Random monitoring signals for checking system integrity and troubleshooting
    Tamper protection to prevent unauthorized removal
    LED serves as fault indicator and test mode
    Low battery detection
    Meets CE requirement
    Certified according to EN 50131 Grade 2, Environmental Class Ⅱ
Specs
    RF frequency: 868MHz
    Power supply: 1 3V CR123 lithium battery
    Battery life of up to 10 years
    -10 ° C ~ + 45 ° C operating temperature
    Relative humidity up to 85% (non-condensing)
    Dimensions: 31 (W) x 87 (H) x 23 mm