Description : KERUI ZD30 Magnetic Wireless Vibration Detector Sensor 433MHz for Home Security Alarm System Alarm Siren Specification : Anti-vibration and anti-thief alarm to prevent the thieves from breaking in. High Sensitivity. Low Power Consumption. Working Frequency: 433MHz Power: DC 12V (12V 23A Battery Includes.) Standby Currents: Less than 25uA Alarm Current: Less than 20mA Transmitting Distance: Up to 80m Transmitters Size: 70 x 36 x 15 mm Package includeds : 1 x KERUI ZD30 Wireless Vibration Detector Details pictures :