... all of our other products, like smoke detector ,gas decetoe ,PIR detector ,sensor and so onHome Alarm System Specification: ... to order extra more) 4) With wireless infrared detector ( valid detecting distance 8~10meter, detecting activate angle ... vertical) 5) Option: Wireless smoke detector /gas leakage detector/rolling gap detector /active infrared intruder detector 6) Working voltage: AC 220V/ ...