VESTA magnetic contact via radio

Characteristics
    Monitors the opening / closing of doors and windows
    Highly extensive and reliable communication range
    Allows the creation of scenes of security systems and home automation to turn on / off devices
    Minimal power consumption
    Long battery life
    Discreet, small and elegant design
    Tamper protection to prevent unauthorized removal
    Mounting on door or window frames
    Supervisory signals ensure proper operation
    Low battery detection
    Suitable for residential and commercial use
    Certified EN50131 Grade 2, ClassII
Specs
    RF frequency: 868MHz
    Power supply: 1 3V CR2450 lithium battery
    Battery life of up to 8 years
    -10 ° C ~ + 45 ° C operating temperature
    Relative humidity up to 85% (non-condensing)
    Contact dimensions: 52.8 x 28.6 x 9.9 mm
    Magnetic dimensions: 25 x 15 x 7.35 mm