The Power2000 AC-FW50 AC Adapter and DC Coupler Kit is a replacement for the Sony AC-PW20 DC coupler and includes an AC adapter to enable continuous, direct power from an AC power source. This allows use of a camera for extended periods of time without draining the camera's battery. This AC adapter and DC coupler kit is compatible with the Sony Alpha NEX-7, NEX-6, NEX-5R, NEX-5, NEX-5N, NEX-3N, NEX-F3, NEX-C3, NEX-3, A37, A33, A35 and A55 cameras.