Wire length: 285cm; Wide range input: 12~24V; With low voltage protection: detects voltage automatically, when the voltage of 12V / 24V batteries is lower than 11.6V / 23.2V, this product would disconnect automatically to prevent the car from ignition failure due to low voltage; This product also can be connected to car battery or car fuse block to 24-hour uninterruptedly supply power; With voltage detection and low-voltage protection function.