Internet Communication Module 7845i-GSM Installation and Setup Guide
1-4
Specifications
Mechanical
Dimensions: 8.4" x 8.0" x 1.5"
Weight: 2.4 lbs., with battery
Electrical
Input Power: 9VAC, 15VA transformer, Honeywell part number 1332 (included)
Backup Battery: 6V, 3.1AH, Honeywell part number K14139, (included)
Current Drain: 35mA average standby, 500mA peak transmit
Radio Fault Output: Open collector, 12VDC, .25W max.
Input Trigger Levels: (V+) 2V – 13V
(V-) 0V – 1V
RF
Transceiver Type: Tri-Band GSM/GPRS Class 10
Modulation: GMSK
Antenna: Internal GSM quad-band antenna 1.3 dBi gain
Band
Transmission
Frequency
(MHz)
Transmit
Power
(dBm)
Receive
Frequency
(MHz)
Receive
Sensitivity
(dBm)
Number
of
Channels
Channel
Spacing
(MHz)
Duplex
Separation
(kHz)
GSM 850
824-849 33
869-894
-107
124
200
45
GSM 1800
1710-1785 33
1805-1880
-106
374
200 95
GSM 1900
1850-1910 33
1930-1990
-105.5
299
200 80
Ethernet
Network Standard: IEEE 802.3u compliant
Data Rate: 10Base-T / 100Base-T with auto detect
Ethernet Cable: Cat. 5 (min), MDI/MDI-X auto crossover
Environmental
Operating temperature: -20º to +55ºC
Storage temperature: -40º to +70ºC
Humidity: 0 to 90% relative humidity, non-condensing
Altitude: to 10,000 ft. operating, to 40,000 ft. storage