1. Easy installation 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. Voltage: 12v 6. 215X32X38CM 7. Accessories optional: Access control, power supply, door closer, ect 8. Delay function: The time delay is adjustable 9. For access control systems with high traffic doors 10. Your own design is always welcome