Check the listing for details. DATAKOM DKG-182 Battery Voltage Monitor Controller, 24V. Condition: New. Listed at 78.00 USD. WE DO NOT SHIP THIS PRODUCT FOR USAGE IN THE USA. The Datakom Battery Voltage Monitor is a compact unit used in telecom and other battery power supply systems. It monitors the telecom battery discharge level in order to trigger external battery charging systems like diesel generating sets. The unit is designed to be mounted on a DIN Rail, inside a panel. Its size is equivalent to two standard circuit breakers. Thanks to the optical isolation between input and output the unit can be used with different systems including genset control systems. The unit has an adjustable precision threshold level for low-battery detection. The adjustment is made from the front panel side. Charge and discharge leds indicate the current battery status.