... radio. Operating times on internal battery:450 MHz receive only option5.8 hours7450 MHz receive/transmit option3.7 hours8GSM/GPRS4.1 hours7 ... • Certification Class B Part 15, 22, 24 FCC certification, 850/1900 MHz. Class 10 GSM/GPRS module. CE Mark approval, and C ... 2 (Dsub 9 pin)• Fully integrated, fully sealed internal 450 MHz receiver/transmitter option:− Transmit power: 0.5 W− Range6: 3 ...