... other places without network.Technical ParametersAverage power: AC/DC exchanger 2A.Wireless receiving distance: ≥ 100mOperating Frequency: 315 or 433 MHZ, GSM 900-1800MHZ ... , 1 wireless PIR detector, 1 wireless door sensor,1 siren, 2 remote controllers, 1 GSM antenna, 1 power supply, 1 manual GSM home security alarm system