Rated voltage: DC12V; Operating range: DC 6~15V; Current work: 200MA (DC=12V); Standby current: 6mA; Operating temperature range: -20~+60 degree; Sound pressure range: 120DB; Power consumption: </= 7mA; Alarm current: </= 230mA; Emission frequency: 315MHz; Encoded mode: sc2262 IC / 4.7Mohms; Operating temperature: -20'C~ +55'C; Humidity: 40% ~ 80%; SIREN + / SIREN-trigger: flashing lights flash every 2 seconds at a red LED light whistle and ring (with the duration of the signal to trigger the same); Alarm Siren: Sound and Flash; LED + / LED-trigger: a red LED flash every 3 seconds on average 1 (duration of the trigger signal with the same); Tamper switch to trigger: flashing lights flash every 2 seconds at a red LED light whistle and ring (3-minutes); External power supply to be cut: flashing lights flash every 2 seconds red LED light siren alarm (last3-minutes); Wireless models: A. Radio frequency: 315MHZ B. Wireless distance: 1) open distance: 100m 2)Indoor distance: 30~50 meters