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Smanos DS-20 is two way reporting so the Smanos K1 Smart Home security alarm hub knows if a door or window is open or closed. Alerts you to the status of a door or window being left open before arming your alarm. Includes 2 X sensors and magnets.
Power Supply: 1 x CR123A
Transmission Range: < 80m
Dimensions: 2.6cm x 2.3cm x 7.0cm
Wireless Working Frequency: 915 MHz