Wireless, 10-second set-up... just push the Alarm button * lock the Alarm onto your Wheel with the provided key, and activate it within 60 seconds with the Remote. * 4 theft-deterrent devices, including steel Lock, warning LED light that flashes when armed, 30-second 125 dB siren and strobe light * Hard steel Lock fits steering wheels from 20 mm-32 mm * 6-digit programmable switches coordinate Alarm and Remote signals