Power your devices that use Sony NP-FW50 batteries with this Indipro D-Tap Cable Using a revolutionary SAFETAP CONNECTOR, protect’s your equiptment with Patented technology. Built-in intelligence monitors for reverse polarity, over/under voltage, short circuits and prevents battery deep discharge. Accepting 10-28 VDC input from a D-tap source, the inline regulation ensures that a steady 7.9 VDC output is sent through the dummy battery to power your device with the correct voltage. Unlike some of our competitors cables, the inline regulation ensures that there will be no overheating or video noise to your camera. This Cable is 28″ in length and is assembled in the USA.