Brand Name : Scimagic-RCOrigin : Mainland ChinaCertification : CEModel Number : doorhan Gate Remote ControlFor : All DOORHAN 433MHz Remote ControlFrequency : 433MHZChip : Rolling codeVoltage : 12v(12v 27a)Material : Metal and PVCincluding : Remote Control/Key Chain/English Manual/BatteryCompatibleA : DOORHAN gate controlCompatibleB : doorhan transmitter 2,doorhan transmitter 4CompatibleC : DOORHAN barrier remoteWhy Choose Us*Highest Sales Volume On All Platforms*Rave reviews*Quality assurance*Quality service*Ship in 24 hoursCompatibleAll 433.92MHz DOORHANFor example:DOORHAN TRANSMITTER 2DOORHAN TRANSMITTER 4DOORHAN TRANSMITTER -2 PRODOORHAN TRANSMITTER -4 PRODOORHAN Premium RC black 41.Type of programming: Programming with the receiver2.Number of channels: 43. Code: rolling code4. Frequency: 868.35MHz5.Woring Range: 10-150 m (open space)6.Power supply: 12V 27A7.Remote come with Battery Security of use: dynamic code provides a high level of security, non-copyable code.Disclaimer:Your Old remote must be same as the advertisement , new remote do not compatible with other remotes .Programming / Learning InstructionsProgram to Gate / Garage Door Openers the same way as original DOORHAN Transmitter 4 remotes, please refer to your receiver's user manual. For a typical DOORHAN Garage Control Panel, the programming procedure is as follows:1. Press and release the button R on the receiver.2. The left side of display panel will show 0 then disappears immediately.3. Press any button twice, coding is completed.4. Press the transmitter button to test operation.Note: To remove a single transmitter's code or all transmitter codes from the receiver memory please refer to your receiver manual.Delete All CodesReset the remote1. Turn on the power to DHRE-2 receiver unit.2. Press CODE button for 10 seconds CODE1 (or SW1) - if you are using CH1, CODE2 (or SW2) - if you are using CH2.3. LED1 will be flashing 10 seconds then switch off for 2 seconds and flash twice to confirm that the memory is clear.4. Release the button. All the stored codes including the courtesy light codes should now be deleted. Confirm this by pressing the transmitters previously used to operate the device. There should be no response.