ZB4BK1243 is a black enamel and metal push button from Schneider. It is a spring return, non-illuminated, plastic button with 2NO contact blocks. It has a IP65 rating for dust and water spray, and DIN VDE 0660 UL listed components for 10A with 24V (AC/DC). This push button is suitable for a wide range of applications, including industry, educational and residential buildings.