Emergency button with locking system for installation in a 22 mm diameter hole. It is a button with a very solid metal body. Press the red key to lock the switch. Unlocked by turning the red mushroom. Emergency buttons for electrical boxes and automations. Compatible with surface boxes for controls, buttons and switches in 22 mm diameter holes (ref #TX0x and #TG5x). Depending on the needs of each installation, users can use different switches, buttons and selectors to control the automation. Ideal for industrial control of electrical equipment, automation, doors, shutters and more. Specification Emergency button compatible with 22mm diameter holes. Product name: emergency stop button. Contact form: one open / one closed Product model: XB2 series Contact material: silver-plated copper Heating current: 10A Hole size: 22 MM Rated voltage: 600 V Product colour: red