Specifications Operation Voltage: 9節�2VDC Arming current: 16mA Disarming current: 15.5mA Alarm current: 250mA DB Output: 110DB Operating Frequency: "315MHz±0.2MHz RF Sensitivity: -105DBm Environment Temp: -10°C節�50°C Environment Humidity: <95% Dimension : (L)130*(W)280*(H)130(mm) Packing Dimension: (L)32.9*(W)25.8*(H)56.3 (cm) Main functions 1.Arming & disarming by remote controller 2.Remote arming & disarming by telephone 3.Field siren alarm 4.Illegal invasion alarm 5.Somke & fire alarm 6.Toxic gas leaking alarm 7.Auto-dial to preset phone-No. for voice reporting