This convenient AC Adapter is designed specifically for Engel Live Bait Cooler Air Pumps (Versions 1 and 2). It automatically switches power sourcesdisconnecting battery use when plugged in to preserve battery life, and seamlessly reverting to battery power once unplugged.

Specifications:

• Compatible with Engel Air Pump Versions 1 & 2

• Automatically switches from AC to battery power

• Helps extend battery life

• Input: 110240V AC

• Output: 3V DC