GSM Module Data throughput, serial: 0.3...115.2 kbps Dimensions L x W x H: 24.4 x 24.4 x 2.7 mm Operating temperature: -40...+85 °C Power supply: 3.22...4.5 VDC Supply current (connected) calculated: 230...360 mA GPRS class: 10 Weight: 2.8 g Base frequency: 900 MHz / 1800 MHz Supply current (off mode): 5 μA