Output contact: NO/COM Power input: DC12V It is widely used in gates, exits, gates and automatic control. Easy to install Features: Zinc alloy shell, safe and durable Looks simple, comfortable and beautiful 50,000 times continuous click test, very durable Good to touch, easy to use and operate Flush mounting Works with all electronic access control keypads, mobile phones with access control keypads Installation manual is not included here, please confirm that you or others know how to install it before purchasing this item Specifications: Material: Zinc Alloy Power Input: DC 12V Suitable humidity: 10-80% Mechanical life:> 500000 times Output contact: NO/COM Working temperature: -10C-50C Dimension: - approx. 3-1/4 (W) x 1-1/4 (H) x 1 (D) inches Package: 1 x Switch exit button (rectangular type) 4 x screws