... home, business store, public plaza security and so on intelligent home function. Widely used forsignal home, residential area,school ... from 110 ACV ~240 AC, customized. Adaptor choosing: two round pins, two flat pins,three pins customized3. Wireless receiving ... surrounding environment and wireless interference)4. Standby current: < 20mA5. Alarm volume: internal :95dB, external siren: 110~120 dB6. One ...