الوصف

Application: this series are suitable for self-help joint defence alarm in factories and campus, emergency calling in hotels, home and entertainment pllaces. 1.Wireless alarming bell call and reception; 2.Wireless &digital calling; 3.Wireless &digital reception; 4.Digital display screen; 5.Packet transmission & reception; ***** lamp twinkles; 7.Start-stop of calling; 8.Honeycomb-like transmission; ***** of the residents in one group could reach *9; *0.Alternating current(AC)power.