Samlex America Battery Monitor - 12V or 24V - Programmable One Size. It is ideal for 12/24 volt systems. All settings are programmable by the user. An audio alarm that sound at high or low voltage level. Features/Specifications: Automatically detects battery voltages between 7V and 32V Ideal for 12/24 volt systems 3 LED: green red and yellow to display various combinations to indicate battery voltage Audio alarm that sounds at high or low voltage level All settings are programmable by user Specifications for Samlex America Battery Monitor - 12V or 24V - Programmable: Manufacturer: Samlex America Voltage: 12 volts 24 volts Color: Black Features of Samlex America Battery Monitor 3 LED: green red and yellow to display various combinations to indicate battery voltage audio alarm that sound at high or low voltage level all settings are programmable by user Input: 12V/24V Output: 12V/24V Package Contents: Samlex America Battery Monitor Samlex America BW-01: Battery Monitor - 12V or 24V - Programmable One Size