... with home, business store, public plaza security and so on intelligent home function. Widely used forsignal home, residential area,school, ... >200m, indoor: 30~50m, (depend on the surrounding environment and wireless interference)4. Standby current: < 20mA5. Alarm volume: internal :95dB, ... two remote controllers, one telephone line, one adaptor, one instruction Wireless intelligent burglar alarm system