Abstract: A signal converting apparatus with a relay function connector includes a body, a signal converting unit installed in the body and having a signal connecting portion connected to an electronic device for transmitting or receiving a first signal, and at least one first signal line is extended into the body and connected to the signal converting unit. The signal connecting portion is connected to another signal converting apparatus through the first signal line, and a relay function wire terminal is installed in the body and has an end connected to a second signal line. The second signal line is connected to the electronic device or an electric equipment for transmitting/receiving a second signal to/from the electronic device or electric equipment respectively. The relay function wire terminal is connected to a third signal line, and the third signal line is connected to an electric adapter of another signal converting apparatus.

Abstract: The present invention relates to a mounting plate for a lock and a electromagnetic lock therewith, wherein a top of a lock body (e.g., a electromagnetic body) of a lock is fixed on a door frame via a mounting plate, the mounting plate comprising a plurality of mounting apertures placed at both ends thereof, and a plurality of mounting holes which an elliptical shape being spaced apart by a predetermined distance, and being provided in a portion between the mounting apertures, and each of the mounting apertures comprising an inner flange formed along an edge thereof wherein the flange of one of the mounting holes is placed opposite the flange of any adjacent one of the mounting holes. In installation, edge of head of each mounting screw on top of lock body is adapted to obliquely insert into the mounting holes and then slide clockwise to rest on the flange. Finally, a plurality of screws are driven through the mounting plate for securing the mounting plate onto the electromagnetic body.