... : RS232, RS485 Standard and Band: GSM850/900/1800/1900MHz 3G modem. Designed with industrial grade, supports SMS, CSD, RS232, AT Commands, with the ... 12V/0.5APower range: DC 5~26V3. Wireless moduleHigh-powered industrial WCDMA/HSDPA/HSUPA module4. SizeDimension(not includng the screw hole ...