ECOM117 Monitors your Amp usage. Easy to read LED segmented display. Connects to your 12V/24V system. Features an overheat/short circuit protection system. Range 0A-10A DC. Wires to a 12V/24V DC power source. ECOM118 Creates a dual point USB port socket for charging cellphones, GPS and other USB devices. Works with all USB plug types. Wires to a 12V/24V DC power source. Range 5V 4.2A DC Includes a protective rubber dust cap. ECOM119 Connect 12V/24V standard accessory power plugs to a power source with this discrete panel insert. The merit socket connects to your 12V/24V system. Range 10A / 24V DC or 20A / 12V DC. Wires to a 12V/24V DC power source. ECOM120 Connects hella plugs to a power source with this discrete panel insert. The merit socket connects to your 12V/24V system and can be used to connect hella plugs to a power source. Range 10A / 24V DC or 20A / 12V DC. Wires to a 12V/24V DC power source. ECOM121 Power your Engel device with this discrete panel insert. Connect your Engel plugs on portable fridge or other devices to your 12V/24V system and power sources. Range 10A / 24V DC or 20A / 12V DC. Wires to a 12V/24V DC power source. ECOM124 Monitors the voltage of your battery. Easy to read LED segmented display. Connects to your 12V/24V system. Features an overheat/short circuit protection system. Wires to a 12V/24V DC power source.