... Home Alarms,safety alarm,security alarm Wireless connection Receive frequency:433MHZ Alarm sonority:within 1 meter>90dB Description: Home alarm,safety alarm,security alarm.1remote controllers 1 ... -4AV Power supply:DC12VA Battery capability:65mA static current:0 Alarm Current:≤6mA (can used twenty –thirty thousand times) ... distance:≤300 meters(beeline distance) Home Alarms security alarm safety alarm