... armed, Partial Armed, Disarmed, Power status, Siren status and GSM Signal status.7)Auto-detect and report, SMS Switch is available ... & Features of the GSM Alarm System1)GSM Frequency: Dual-Band(900/1800MHz), Quad-Band is optional(850/900/1800/1900Mhz) ;2)Supports armed ... time is editable by user;10)Equips with 1 Alarm-Link output relay, once the system triggered, the output will switch ...