... groups of relay outputs products introductionThis Excellent GSM + Camera alarm system bases on the GSM network, integrates the communication technology, can ... :Standby current: 50mA.Working volt. : DC 9~12VWorking temperature: -40°C~85°CGSM frequency: 900/1800/1900MHz,3 ... controllers, 1 camera, 1 GSM antenna and 1 RF antenna ,1 power supply, 1 manual GSM alarm system with MMS&SMS function