1、Appearance: The switch is printed with the word emergency, which effectively reminds others that this is a switch for emergencies, and the red letter makes it more eye catching. 2、Function: In an emergency, if you want to go out, you just need to press this button. And it support both normally open normally closed output mode. 3、Material: Made of flame retardant resin material, high temperature resistant, wear resistant and anti scratch, pressure resistant and non deformable. 4、Easy Installation: The switch comes with two mounting screws, mounted at each end of the switch, and can be used after wiring, making it easy to install. 5、Application: This door release exit button can be used for any access control application and is commonly used in offices, banks, gas stations, department stores and many more.