... office, shop 3.Quad band GSM frequency 4.Voltage: 110V-240V 5.433mhz, 315mhz Functions & Features of the ... number to receive alarm informatio like LOW-VOLTAGE, ARM/DISARM status etc6.Alarm SMS include ... status information, AC power off and recover, Low voltage, test)8.Support wireless “ding-dong” doorbell , ... clients Specification: 1.Working power: AC=100~240V, DC=12V 1A2.Static current:<35mA (when ...