Battery Monitor - 12V or 24V - ProgrammableThe Battery Monitor is a smart piece of equipment which automatically detects battery voltages between 7V and 32V; ideal for 12/24 volt systems.BW-01 Battery Monitor - intelligent 12V/24V programmable system.Features:3 LED: green, red and yellow to display various combinations to indicate battery voltageaudio alarm that sound at high or low voltage levelall settings are programmable by userSpecifications:Input: 12V/24VOutput: 12V/24VWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.