Abstract: Safety power outlet connected to a plurality of power lines, including a hot line, and arranged to receive the prongs of a matching multipronged power plug has a receive terminal connected to each power line. The receive terminal is arranged to receive a corresponding prong of the power plug which upon insertion into the terminal operates a switch associated with each terminal. All switches are connected in series, and upon complete insertion of all the prongs, the series connected switches complete a power connection from the hot line to its respective prong, which in turn provides power to the external circuit connected to the power plug.

Abstract: A telecommunications circuit pairs identifier device that has a transmitter portion that is connected to a predetermined group of pairs at the trunk line termination point and a receiver that is plugged at each one of the jacks distributed in a given network. The transmitter continuously accesses each one of the circuit pairs by counting them and transmits, during the time of access or selection, the count for that particular jack. The receiver portion of the device is removably connectable to each jack and detects, decodes and displays the output sent so that a user can identify the pair in the jack with a particular predetermined pair termination.