Hummingbird RF Battery Monitor with receiver HMRF2000B
Its is now a legal requirement in some states that you monitor the battery voltage of your trailer/caravan. Hummingbird Electronics' RF Battery Monitor allows the user to monitor a remote battery without having to run wires to it. No costly installation needed to monitor caravan, boat, fridge, solar and many other batteries. Powerful Performance The RF Battery Monitor measures battery voltage of up to four remote batteries and and displays it on a remote colour screen. Alarm levels