1.Simple control alarm system via SMS or Call 2.Metal remote control 3.Partial arm wireless alarm 4 ... make Home Arm and Out Arm mode(Partial Arm Function)Call to set alarm ON, OFF, Monitor, Output, Intercom.Send ... 2.O1; O2: These 2 ports for output, you can call in or send SMS to set it. If output of ... speaker is connected to ground. You can control it by call in or send the SMS to the alarm system. If ...