Bescor ACPW20 DC Coupler and AC Adapter for Sony CamerasBescor ACPW20 DC Coupler and AC Adapter for Sony Cameras The ACPW20 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 a7 R S, NEX 7, NEX 6, NEX 5R, NEX 5, NEX 5N, NEX 3N, NEX F3, NEX C3,