Galley Power LLC Low Voltage Battery Disconnect, 20A, 12V/24V Auto Detect User selection for 8 disconnect threshold: 9.3~12.1V for 12V battery and 18.6~24.2V for 24V battery 20A continuous current in full temperature range -40~130F 4.5m ultra-low resistance: Less than 1/10 of power loss compared to competitors Automatic 12V/24V battery detection Low operating and standby current consumption: down to 0.26mA with 12V battery