Operating voltage: dc 12v Static current: ¡ü20ma Alarm current: ¡ü400ma Wireless receiving frequency: 315mhz¡à0.5mhz Wireless receiving sensitivity: 315mhz¡à0.5mhz Anti-interference: 1v/m£¨frequency:20-1000 mhz£© Gsm frequency: 900/1800mhz Outer alarm siren volume: 110db Working condition: temperature: -10¡æ¡«40¡æ Humidity: ¡ü90% Capacity for wireless device: 10pcs