1、With self-reset function, used for door control. It is matched to the access control system. 2、Adopts PC fire-retardant material, safer and has good feeling to operate. 3、Application of high-strength fatigue resistant spring structure, more practical, durable, and reliable. 4、The mini and user-friendly design, is good and simple to install. 5、Normally open, normally closed, and public COM signal output, can meet all your needs, more convenient and practical. Features: With self-reset function, used for door control. It is matched to the access control system. Adopts PC fire-retardant material, safer and has good feeling to operate. Application of high-strength fatigue resistant spring structure, more practical, durable, and reliable. The mini and user-friendly design, is good and simple to install. Normally open, normally closed, and public COM signal output, can meet all your needs, more convenient and practical. Specification: Name: Exit button Material: ABS plastic Style: Red word, white word(optional) Color: As pictures shown Voltage: DC12V/3A Installation Method: Screw installation Door Open Mode: Button Signal Output: Normally open NO / normally closed NC / public COM Package List: 1 x Switch