1) passed CE certificate 2)it is characterized by. compact structure. 3)easy installation and competitive price Pushbutton Switch,Switch Model No: BC42,BC21,BC31,BC51This series of pushbutton switches are used for automation and signals in controlcircuits below AC 660V, DC 440V with frequencies of 50Hz or 60Hz Features and specifications:1) Basic spec code: 22mm2) Protection grade: IP40, IP653) ...