... indoor: 30~50m, (depend on the surrounding environment and wireless interference)4. Standby current: < 15mA5. Alarm volume: ... DCV9. One wireless infrared detector: 10m*120 °horizontal+60°vertical10. Optional sensor: wireless smoke detector, gas leakage detector, vibration sensor, ... one PIR detector, two remote controllers, one telephone line, one wired siren, one adaptor, one instruction Wireless & ...