Modular Design for Easy Installation and Wiring Additional Contact Blocks (up to 6) can be added for Different Configurations Industrial Grade for Tough Environment Safety Standards: UL listed, CSA Certified and TUV Approved Mounting Hole Size: 30mm, Button Type: Mushroom, Button Color: Red, Head Diameter: 40mm, Operation Type: Latching, Switch Contact: 1NC (Normally Closed), Terminal Type: Screw, Ui 600V ITH 10A, Voltage rating: 120VAC 6A, Protection Rating: IP65, Mechanical Life: 1,000,000, Panel Thickness: 1-10mm, Depth Behind Panel: 2"