Abstract: A contact sensor includes two film layers, two electrode layers, and a failure detection electrode. The two film layers respectively have a first inner surface and a second inner surface corresponding to each other. The two electrode layers are respectively disposed on the first inner surface and the second inner surface, and the two electrode layers are separated by a gap. The failure detection electrode is disposed on at least one of the first inner surface and the second inner surface and is electrically isolated from the two electrode layers.

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.