Description: Approach to clearing old codes: Long press the LOCK & UNLOCK buttons to clear old codes Approach to duplicating: Place them side by side(as close as possible), then press both one key of your old remote and the to-be-matched key on this remote simultaneously. Approach to recovering: Press the lower two buttons for about 3 seconds Approach to test if the old codes are totally cleared: Press any key on the remote duplicator, if the LED indicator blinks, codes cleared. Otherwise, undone. Humanized design: Button slide cover to protect buttons from accidental unplanned operation. Application: Vehicle central locking systems, garage doors, electronic doors, car sunroofs, heating systems, etc. Specification: Material: ABS plastic Working Voltage: DC12V /23A Woring Current: 15mA Operating Frequency: 315MHz Control distance: 200m / 218 Yard (in empty areas) Overall Size: ( L x W x Dia. ): 53 x 40 x 10mm / 2 x 1.6 x 0.4 Inch Color: as shown in the display pictures Package Includes: 1 Piece Universal Remote Control
