Specifications: Easy to install, waterproof, shockproof, durable. The switch will be on when you push button, and it will be off when you undo button. This switch can be used for circuit control in electromagnetic starter, contactor, relay and other electric circuits. Item Name: Push Button Switch Material: Metal Operation Type: Momentary (Self Return) Switch Contact: 1NO (Normally Open) Head Shape: High Round Max Switch Rating: 2A/36V DC Terminal Type: Screw Terminal Operation Temperature: -20 to 55 Degree Celsius Mounting Cut Hole: 16mm/0.63" (Approx.) Head Diameter: 18mm/0.71" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Push Button Switch 1 x Rubber Ring