This Stilo WRC 03 intercom is fitted with Stilo's top of the range WRC electronics, and is designed for use with the Trophy Plus helmet and all of the WRC and ST5 helmet range, and also with the WRC headsets. The WRC electronics in these products are matched to complement each other and further enhance the sound and clarity advantage that Stilo has over any other brand. The unit is designed to run off a 9-volt battery as standard but there is a car adapter which available as an extra, to allow a permanent feed from the cars power supply, this part being YB0100 - 12v Intercom Adapter. This analog intercom system has individual rotary volume controls for both driver and co-driver, and an automatic on/off power switch which operates when the co-driver has connected/disconnected his helmet plug. The green led light on the front of the unit illuminates when the intercom is operational. This intercom comes with an output connector to allow you to connect your own video camera and record the conversation between driver and co-driver. Owing to the quality and the sensitivity of our electronics the use of our booster cable may be required to allow the camera to pick up the communications between driver and co-driver. Other helmet brands can connect into the intercom by utilizing our Stilo conversion cable - AC0200.