... appliance remotely.Can support the GSM cell phone, with sending the English message function.Can store five alarm phone numbers which are belong ... the spot.To start to work with the password, which guarantee the safety of the system.Built-in battery ensures to work ... , 1 wireless door sensor,1 siren, 2 remote controllers, 1 GSM antenna, 1 power supply, 1 manual GSM home security alarm system