... internal radio. Operating times on internal battery:– 450 MHz receive only option 5.3 hours, varies with ... temperature– 450 MHz receive/transmit option 3.5 hours, varies ... Part 15, 22, 24 FCC certification, 850/1900 MHz.Class 10 GSM/GPRS module. CE Mark approval, ... 9 pin)• Fully Integrated, fully sealed internal 450 MHz receiver/transmitteroption:– Transmit power: 0.5 W– Range7 ...