Usage Tips:Item Name : Emergency Stop Push Switch Push to stop and lock, twist to reset, 2 screw terminals, 1 NC contact type, mushroom emergency stop push button switch. The switches are structured compactly and operated quickly and gently. Can be widely used to control the electromagnetic , contactor, relay and other automatic control electric circuits. Action Type : Latching Contact Type : 1 NC Ith : 10A;Ui : 600V Uimp : 6KV AC 15 : 240V 3A Button Diameter : 40mm/1.6 inch Mount Hole Diameter : 2.2cm / 0.87 inch (7/8 inch ) Fit Panel Thickness(Adjustable) : Max 8.5mm / 0.3 inch Size : 39 x 29 x 73MM/ 1.5 inch x 1.1 inch x 2.9 inch (L*W*H) Material : Plastic and Metal Main Color : Red, Black Net Weight : 98g Package Content : 2 x Emergency Stop Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.