Three styles for NOVOFERM 433MHz Rolling Code remote control 100% compatible with: NOVOFERM MCHS43-2 NOVOFERM MTR43-2 NOVOFERM MNHS433-02 NOVOFERM MNHS433-04 NOVOFERM NOVOTRON 502 MAX43-2 NOVOFERM NOVOTRON 504 MAX43-4 NOVOFERM NOVOTRON 512 MIX 43-2 NOVOFERM MINI-NOVOTRON 522 NOVOFERM MINI-NOVOTRON 524 NOVOFERM MINI-NOVOTRON 522 Design NOVOFERM MINI-NOVOTRON 524 Design Access to receiver required. Please ensure access to your receiver or opener before purchase. Specifications: Item condition: New Third-party remote control – not made by NOVOFERM Decoder IC: Rolling Code Frequency: 433.92 MHz Operating voltage: 12V DC 27A / CR2032 (battery included) Transmit distance: 25–50 meters in open space. Open space refers to no interference such as walls, doors, trees, or other obstructions. Interference from structures like garage doors or brick walls may significantly reduce range. Programming instructions: 1. Open the casing of your receiver, located next to the motor. 2. On the receiver circuit board, press and release the programming button (labeled ENR, MEMO, PROG, or REC depending on model). The LED light will illuminate or blink. 3. Press any button on the new remote control for 1 second. 4. Release the button. The LED light on the receiver will turn off immediately or within 10 seconds, depending on the model. The remote control is now programmed. What’s included: 1 x Remote control 1 x Battery 1 x Keychain 1 x English instruction manual Professional certification and quality assurance