... unit can be used as a telephone;9. Arm, disarm, monitor, and intercom by phone;10. Real-time, Delay, 24 ... Volume: 110dBStandard pack components1 main panel, 1 wireless infrared (motion) detector, 1 wireless door magnetic detector,1 siren, 2 remote controllers ... , 1 power supply, 1 manual LCD security GSM wireless SMS alarm systems with ...