This UHPPOTE Zinc Alloy Shell Door Push to Exit Button is a great choice for access control. It is made of zinc alloy, making it safe and durable. It has a simple, comfortable and beautiful design. It has undergone 50,000 times continuous clicking test, making it very durable. It is flush mounted and works with all electronics access control keypads and door phones with access control keypads. Get this UHPPOTE Zinc Alloy Shell Door Push to Exit Button and enjoy its great features.