GSM Module Dimensions L x W x H: 150 x 65 x 45 mm Operating temperature: -30...+75 °C Power supply: 7...32 V Contrast: SSweTFre1 GPRS class: 10 Weight: 220 g Antenna connection: FME/M Base frequency: 1800 MHz / 1900 MHz / 850 MHz / 900 MHz Protection rating: IP65