Features:Zinc alloy shell, has a minimalist look and a modern feel, Looks simple, comfortable and beautiful.The sturdy and durable surface will give you many years of dependable service.This door release button features a quality push button, Good to touch, Easy to operate and use, Flush mountingIt is an auto reset push button with a flexible feel. It can be used for controlling the door release.Works with all electronics access control keypads, door phones with access control keypadsSpecifications:Product Name: Door Release ButtonOutput Contact: NO/COMCycles tests:100,000 timesPanel Material: Zinc alloyPower Input: DC 12VMaximum Current rating: 3ASize: 3.23" x 1.26" x 0.98"(L*W*H)/82mm x 32mm x 25mmWeight: 0.106kg / 0.23lbPackage contents:1Pcs x Door Release Button4 x Screws