The GSM 
                              Modem is a wireless cellular connection for 2-way 
                              communications with a wide variety of remote 
                              equipment and Utility applications. Visiontek GSM 
                              Modem is complaint to high-power, dual band 
                              (900/1800MHz) GSM cellular transceiver, ensuring 
                              reliable connectivity well beyond the range of 
                              conventional cellular phones. Power can be 
                              supplied from a wide range of AC 
                              voltages.
                              
Capabilities Of 
                              VISIONTEK 81G (UM):
"Test 
                              Mode" - a signal strength indicator 
                              viewed via laptop, PC or PDA, gives an accurate 
                              indication of the digital signal at site with an 
                              RS-232 Interface.
Short Message Service 
                              (SMS) and GPRS compatible.
LED 
                              indicators, to give full real - time 
                              feedback on the operating condition of the 
                              unit.
Non -transparent (error 
                              correction / data compression) data 
                              transmission at 200/2400 / 4800 / 9600 bps 
                              programmable via laptop, PC or PDA.
                              Utility applications include 
                              automated meter reading 
                              (AMR),Telemetry and substation 
                              automation. It has an embedded 
                              intelligence that it drives security 
                              Control of remote devices through I/O ports. 
                              Features like Watchdog timer 
                              that - monitors the data module and 
                              resets the GSM Modem in the event of 
                              firmware/Hardware failure is 
                              enabled.
Accesories:
                              1. Optical reader(or) Modem 
                              cable
2. Power cable
3. Standard rubber antenna - regular 
                              GSM Coverage Areas.
4. Power 
                              Adaptor