Units for easy and accurate detection of the phase polarity of all the devices home cinema, audio and video. The connection of all phase devices to a power source, high-performance (such as sockets or Oehlbach Oehlbach Powersocket Powerstation) prevents the grounding circuit and maintains a perfect acoustic imaging and interference-free display. The tester is easy to operate and is performed by means of a solid and reliable technology. The cabinet is positioned within a solid aluminum frame with high-quality aluminum finish. The phaser is powered by a standard 9V battery (included). (Limited function in components with inductive power switch).