The RC-9100 is designed to be a remote control head for the TDFM-9100 airborne transceiver. It is a secondary (slave) control point and is not intended to replace the function of the front panel of the radio. This Remote control dimensions are 5.75 in x 3.0 in x 1.3 in and it weighs just 12 oz. Power requirement is 150 mA at 28.0 VDC. Panel backlighting is 28 VDC or 5 VAC (software configurable).