Abstract: A security system with power saving feature includes an electromagnetic lock and a sensing module. The electromagnetic lock is for receiving a limited supply of an electric power supplied by a power supply circuit before a full supply of the electric power is delivered to the electromagnetic lock. The sensing module may cause the full supply of the electric power upon sensing a specific action signal caused by an environment change. Therefore, the electromagnetic lock may operate in a lock state with only the limited supply of the electric power and still operate in the same lock state even after the generation of the triggering signal. Thus, the time during which the electromagnetic lock operates with the full supply of the electric power is minimized, limiting the total power consumption accordingly.

Abstract: A multi-region monitoring system comprises: an image-capturing module having a lens assembly; and a mirror assembly having at least two mirrors, wherein the mirrors face the lens assembly. By adjusting the rotation angle of the mirrors, objects of several specific regions can be reflected in the mirrors, and the image-capturing module captures a digital image of the mirrors and the objects reflected therein. Due to the capturing range of the image-capturing module including the mirrors only, the captured digital image is able to have high resolution.