The Relay Camera Coupler CRCNPF provides continuous, uninterrupted power supply for compatible cameras when used with the Case Relay Camera Power System. This solution is particularly suitable for time-lapse photography, photo booths, video production, as well as power-intensive LiveView recording sessions or extended shooting days. The coupler connects directly to the camera's battery port and attaches to the Case Relay CPS unit, enabling power supply via the included Rock Solid External Battery Pack, AC power sources through a USB-to-AC adapter, or ONsite D-Tap Battery with V-Mount. A key advantage is the system's secondary internal 1200mAh battery, which maintains camera power during the switch between external batteries, eliminating power interruptions. This approach proves more cost-effective than purchasing multiple manufacturer-specific camera batteries and offers manufacturer-independent power supply, allowing the use of standard 5V batteries commonly used for phones and tablets. Compatibility extends to most camera models from Canon, Nikon, Sony, Panasonic, Fujifilm, and Olympus, with a specific model check recommended. The system requires a complete closure of the battery door for proper operation, with the coupling cable routed through the rubber seal. Please note that the Case Relay Camera Power System must be purchased separately to utilize this coupler functionality.