Get up to 2 weeks of back-up battery power with the 6 "D" cell battery holder. This plugs directly into the 9V back-up battery connection on the back of any FreezeAlarm and the Wireless WaterAlarm. Even if the unit is calling out every 15 mintues, you'll get almost 2 weeks of battery power from this handy back-up battery device.
This devise REPLACES the use of a 9-volt battery. The carriage requires 6 "D" cell batteries instead of a single 9-volt.
