4 separate hardwired zone, each zone can select different alarm sounds. 10 leaning remote control for arm, disarm, stay arm, 24-hour zone 1 wireless zone can work with up to 30 wireless detectors and 10 remotes Support 6 voice call numbers and 6 SMS numbers ( only for Z4K) The authorization number can control the relay output through the incoming call Programmable power cut or arm & disarm notification Automatic battery charger Ac power lost warning Built-in high power sounder with speaker output Programmable 24 hour zone Part arm for the active part of sensor for alarm system