Extra Remote Control for SWA03RThis remote control works exclusively with our SWA03R steering wheel alarm. The extra remote control will allow an additional user to arm and disarm the alarm as long as the dip switches (programmable codes) are set the same on the remote and alarm. With the included key ring you always know where the remote is located. The remote requires a 12 volt battery that is included. Dimensions are two and one-half inches x one and three-eight inches by three-eight inches not including the key ring.