The ART is the ultimate time saver. In some vehicles it can be difficult, or downright impossible to find a switched +12V source. In these instances, the ART is the solution. It provides an easy way to generate a +12V trigger for audio systems or small electronic devices, such as dash cams or radar detectors. Installation is simple. All that is required is a +12V for Power, a Chassis Ground and connection to a single speaker. That's it. ART Features +12V Output Generation Capable of Driving Multiple Relays Simultaneously 1.5A Continuous Output Current Independently Select DC Offset or Audio Detect, or Use Both Simultaneously Locking Detachable Terminals Compact Size Dimensions: 0.7”x1.7”x1.4” (18x44x36mm)