ive always used cyclops in my cars, and installe heaps of them too. I have never seen one fail. Plus you can add anything onto them. Microwave sensor (single and dual stage) ultrasonics (sinle and dual stage), tilt sensor, shocksensor, glass breakage sensor, reomote start, auto elec window up and down, works with ur turbo timer etc etc. Can get them from strathfield pretty cheaply. Guarantee youll be happy with it. Look at the S74B or S75C/