GSM STATION MONITOR,GSM STATION ALARM,GSM STATION SAFE DEVICE,GSM SECURITY AND PROTECTION,STATION SECURITY,SAFE EQUIPMENT,GPS ... 1200mAH lead-acid batteries8) Standby battery working hours (basic configuration, GSM standby launch) ≥ 36 Xiao Shi.9) Working environment: ... )System componentsInstallation and use of this device, please prepare the following items:1, GSM Mobile phone: (phone must have caller ...