Check the listing for details. Switch push button KME (AZ-5) red USSR NEW! Lot 2pcs.+. Condition: Open box. Listed at 20.22 USD. The buttons perform the functions of switching on, off, or switching 1-2 directions of the circuit, with or without locking the position. Protection levels are IP40 and IP54. The buttons are fixed by fixing them in the hole on the panel using a thread.