... ,AC 220V DC 9V Static Current,≤50mA Alarm Current,≤300mA Wireless Receiving Frequency,315/433/ ... 5MHz Wireless Receiving Sensitivity,5mV/ m Outer Alarm Siren Volume,110dB Working Condition,Temperature-10°C ... & practical auto-dial intruder alarm system with1. Auto-dial 6 groups of alarm number automatically when the intruders ... , every family can have it. Simple & practical auto-dial intruder alarm system