The emergency stop button is made of high quality plastic and metal, eco-friendly, safe, sturdy and durable. The stop push button has 4 screw terminals, 1 contact type DPST NO + 1 NC , emergency stop push button with red mushroom. The switch is compact in design and works quickly and smoothly. The emergency stop push button can be widely used to control electromagnetic starters, contactors, relays and other electrical circuits for automatic control. Package includes: 1 x Emergency Stop Switch.