electric bolt (H6819 SERIES)

1.easy installtion
2.scope of application:application all type of door.no frame door can choose bracket.all swinging doors
3.fail-safe operation
4.temperature rating:-40c-100c
5.different series different sizes
6.accessories optional:access control,power supply,door closer,ect
7.delay function:the time delay is adjustable
8.with key & mechanical lock
9.your own design is always welcome