Safer life starts with our products 1.Type of programming: Programming with the receiver 2.Buttons : 2 / 4 Buttons 3.Code: Rolling Code 4. Frequency: 433.92MHz Compatible with: MCHS43-2 MTR43-2 MNHS433-02 MNHS433-04 NOVOTRON 502 MAX43-2 NOVOTRON 504 MAX43-4 NOVOTRON 512 MIX 43-2 MINI-NOVOTRON 522 MINI-NOVOTRON 524 MINI-NOVOTRON 522 Design MINI-NOVOTRON 524 Design Include: 1 x Remote Control 1 x Battery 1 x Keychain 1 x English Manual How to program: 1. Open the casing of your receiver. It is located next to your motor. 2. On the receiver circuit board, press the programming button and let it go (ENR, MEMO, PROG, REC according to the model) The LED light on the receiver illuminates or blinks. 3. Press a button on your new remote control for 1 second. 4. Let the button go. The LED light on the receiver turns off immediately or in the following 10 seconds according to the model. Your new remote control is programmed. Shipping Notice: Customs Tax : Customs Tax should be paid by buyer, Seller can't support any Customs Tax. Remote Area : For Remote area, DHL/Fedex/UPS/TNT will charge extra " Remote Area Fee". P lease understanding it. Return: Returns are accepted . In case of a refund all items must be returned undamaged, in a re-sellable condition. For DOA (Defective On Arrival) items, which will be replaced or refunded, please inform us within 24 hours of arrival, please also keep all of the components and original packaging as further checking might be required. Faulty items must be returned for repair or exchange. Buyer is responsible for all shipping costs of returning an item for a refund or exchange . Contact us: 1.If you have any question, Please contact us.All message will be answered within 24 hours from Monday to Saturday. 2. Please contact us before leaving any negative or neutral feedback or opening disputes, we will work with you to solve any problems.