The basic principle of the system is to inject a signal onto the power lines at a much higher frequency than the 50 or 60 Hz of the AC power itself. Using both active and passive filters ...

A power supply for electronic devices. Also called an "AC adapter" or "charger," power adapters plug into a wall outlet and convert AC to a single DC voltage. Computers use multiple DC voltages ...

The size of the RAC20NE-K/277/EPID is just 83mm (H) x 26.4mm (W) x 29.5mm (D), and parts are supplied with a clip for tool-less ‘snap-on’ fitting to a fixed DIN-Rail.