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. Unlocking mode: Power to lock/power to unlock is adjustable 5. Temperature rating: -40c-100c 6. Voltage: 12v 7. 205X32X39.5MM 8. Accessories optional: Access control, power supply, door closer, ect 9. Delay function: The time delay is adjustable 10. Lock signal output, door monitoring 11. For access control systems with high traffic doors