DescriptionBrand Name : Scimagic-RCUse : Electric Door,Automated curtains,Switch,UniversalOrigin : Mainland ChinaWireless Communication : RFSupport APP : NoCertification : CEFrequency : 433 MHzChannel : 4Package : YesModel Number : Liftmaster TX2REV TX4REVKey words : Liftmaster TX2EV TX4EV compatible remote transmitterName 1 : LiftMaster TX2EVS TX4EVS remote transmitterName 2 : Liftmaster TX2REV TX4REV garage door remote controlFrequency : 433MHZ 433.92MHzChip : Rolling codeVoltage : 12vSize : 70*33*13mmDistance : 5-50 M (open space)Usage : Program on receiverMaterial : Metal and PVCThis is a compatible remote control for Liftmaster TX2REV TX4REV hand TransmitterComaptible with:Liftmaster TX2EV TX4EVLiftMaster TX2EVS TX4EVSLiftmaster TX2REV TX4REVDescription:1.Type of programming: Programming with the receiver2.Number of channels: 43. Code: rolling code4. Frequency: 433.92MHz5.Woring Range: 10-50 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 remotesFeature1. Free Battery2. Free Coding Instructions3. Free Keychain4. Heavy Duty Design5. In-built Battery6. Button ProtectorProgramming transmitters to receiverThe remote control is the same function as your original remote.it should programming with original receiver according to your original Manual when you get it.1. Locate the Learn / Code Set button on the motor. This is usually under the lamp cover, or on the back of the motor.2. Press the Learn / Code Set button once, then let go. A light should illuminate.3. Press the desired transmitter button once, and the light will go out.4. Press the remote again the the light will flash on the motor and then go out, signifying the remote has been coded.5. Test the operation of the remote.IncludeRemote ControlBatteryKeychainEnglish ManualShipped within 24 hours (except holidays)Professional certificate, high-quality after-sales service