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Utility Week Live
16 May 2018

DELTA PLUS MOBILE II

A further new addition to ASLH’s well established and proven range of Delta Plus telemetry modems, the Mobile II allows access to remote data via the public mobile phone networks. Replacing the need for a fixed line modem, it provides Automatic Meter Reading (AMR), utility data collection and remote logging applications. Whilst the replacement of batteries in consumer GSM phones is reluctantly accepted, it is not economic in many industrial applications due to problems of access and cost. This makes low operating power usage vital. The Delta Plus Mobile II has been designed with that requirement paramount. Full power is only used when online. In low power standby mode it will still action commands from the host: for example to dial or answer a call.

In standby mode, at 6V the Delta Plus Mobile II consumes <50mW rising to a maximum of 0.5W when communicating. This allows the use of advanced Super Cap technology to eliminate the need for batteries and their associated problems. For maximum compatibility and ease of use the unit has been designed to operate like a normal modem. There is no need to understand additional GSM network specific operations. Even when operating in GPRS mode, once installed, it acts like a leased line modem. To reduce transmission times, the Delta Plus Mobile II can be used in V110 mode making and receiving calls to and from hosts connected using ISDN or GSM rather than standard telephone modems. A suitable antenna can be fitted to the unit’s flying lead or mounted remotely via an extension cable if required. Installation is further simplified, as the unit is so light that it can be mounted via its 25 way ‘D’ connector. Naturally, the Delta Plus Mobile II includes watchdog and power brown out detection to maximize high reliability of operation. The Delta Plus Mobile II is ideal for use with electronic electricity meters where it is small enough to fit under the terminal cover. Alternately the unit can be used for data logging applications where the low standby current requirements will allow a long battery life.

For technical specifications please visit https://aslh.co.uk/project/delta-plus-mobile-ii/

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