The IndiPRO Tools D-Tap to DC Regulated Power Cable for the Sony FS5, FS7, and FS7 II Cameras allows you to power these camera models off of a D-Tap power source, such as a V-Mount or Gold Mount battery. The cable is inline-regulated to deliver a constant output and prevent causing video noise and heat in the camera. (The FS5 and FS7 require a regulated voltage source.)