QN-RD172X Multi Frequency Duplicator Copy Fixed Code Garage Door Remote Control Feature Functions and Features 1. Self learning remote control 2. Application: car alarms, home alarms, panic buttons, garage door, rolling curtain, etc 3. Copies most radio frequency fixed code remote controls 4. Learining face to face in seconds 5. Battery included Model No.:QN-RD172X Frequency:Fixed Code Modulation:FSK Operatiing Range:50-80M Button Durability:100 000 times Battery: 27A Gurantee:2 years OEM and ODM Services:Yes Application:Garage Door HS Code:85269200