AERINOS® BSC-50D is an ultra low power wireless RTU with data logging and alarming capabilities via SMS. The battery powered RTU incorporates a GSM/GPRS modem, a USB serial port, 4 digital inputs, an internal temperature sensor and 1 digital counter. A Lithium Thionyl battery provides autonomous operation for up to 15 years.
http://www.gprsmodems.co.uk/acatalog/Infinite_BSC_50_DM_Battery_Powered_Controller.html
BSC-50D Telemetry Device
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