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New modems for meters & instruments in harsh environments

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METMOTEC, the British specialist metering modem supplier, has launched modems for harsh environments.

The ‘ENDURANCE’ range has both PSTN and GSM modems powered either by mains or batteries and aimed at industrial and field applications with particular focus on industrial electricity meters used in substations. The GSM modem can provide GPRS operation with fixed-IP address SIM cards.


The new modems are complete ‘systems’ supplied in IP65 rated enclosures of very tough ABS material providing protection against rain, dust, sunlight and insect ingression; they can operate from minus 20 degrees to plus 70 degrees Celsius. Each system is contained within the enclosure and comprised of modem, power source, host meter or terminal device interface adapter, and antenna for the GSM version.

Both PSTN and GSM versions can use an internal AC/DC power adapter or the PSTN unit can alternatively be provided with a user replaceable internal battery pack, with typically a 5 year life. The GSM modem can be provided with connection for a large external battery. METMOTEC offers a range of modem-to-host interface adapters for many industrial electricity meters or provides a custom interface design service for others. The PSTN modem is offered with an optional line-side surge protector to aid protection of the modems against lightning strikes. Modems and surge protectors can be easily panel mounted and are generally suitable for use in Europe and most countries in Middle East, Africa and Asia.



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