SPY-Exit Push Button can be used to activate an electric strike from a receptionists desk  next to the door for quick emergency exit , The exit button is one part of access control system. The whole system includes electric lock, access controller, power supply, exit button, door bell, etc. it is using the latest  built-in structure, safe and reliable, the installation is very simple. It is easy to use that If you want to go out, you just need to press this Exit Button, then you can go out .