30A Low Voltage Battery Disconnect with Alarm output, 12V/24V Auto Detect Automatic 12V/24V battery detection Recessed selector for 8 disconnect threshold (-R): 9.3~12.0V for 12V battery and 18.6~24.2V for 24V battery 30A continuous current in full temperature range -40~130F; 65A continous at 72F 2.2m ultra-low pass-through resistance and ultralow standby current down to 260uA in 12V mode Alarm output warning battery is close to disconnect threshold or in disconnect state; 85mA max sinking capability