Abstract: A safety apparatus is used to be arranged at a movable member of automatic device and is communicatively connected to a controller of the automatic device. The safety apparatus includes a contact detector and a module. The contact detector is for detecting a contact event of the safety apparatus, and outputting a contact signal. The module includes a first input terminal, a second input terminal and an output terminal. The first input terminal is communicatively connected to the contact detector, and is for receiving the contact signal. The second input terminal is communicatively connected to the output terminal, and is capable of communicatively connecting to an output terminal of another safety apparatus. The output terminal is communicatively connected to the first input terminal, and is for outputting an output signal when the first input terminal receives the contact signal.

Abstract: A monitor capable of providing predetermined format: the monitor includes, an on screen display (OSD), an input device, and a processor. The OSD has a predetermined format drawing module for drawing a predetermined format in at least one size. The input device is used for inputting a selected signal. The processor is used for receiving the selected signal, and executing the predetermined format drawing module for drawing a predetermined format on the panel of the monitor. The starting position of the predetermined format can be at any position on the panel of monitor, and the predetermined format corresponds to the variety actual size of the standard photos or the standard documents the standard letter or grids format.