... 250m, indoor: 30~50m, (depend on the surrounding environment and wireless interference)4. Standby current: < 15mA5. Alarm volume: internal : ... : working voltage:+9 DCV,200mA.7. two wireless remote controllers: four button: disarm/arm/panic/PIR detector8. ... sensor: wireless smoke detector, gas leakage detector, vibration sensor, siren with strobe light, flashing siren, horn siren, remote control, ...