Grounds for application: automation of instrument accounting, GSM-connection stability in chosen place, preference of current type of connection towards another ones, opportunity for entering internet network for connection that supports unlimited distances. It is reached by integration of Fargo Maestro 100 GSM modem in measuring equipment package of “Measuring technologies”. The duration of modem continuous running via automobile accumulator, even not big size (from 40 A/h), at hourly removal of archive information and less than 50% of storage battery capacity consumption - more than 3 months without recharging. Capability of modem charging also can be via electrical network adapter. To meters X12 and gas volume compensators B25 in amount from 1 to 20, the modem connects via RS232 adapter connector.
