Garage Door Remote Control Transmitter for NOVOFERM NOVOTRON 502/504/512/522/524 Frequency 433.92 MHz, Remote Control and Wall Transmitter for Operators (2 Pieces) Important: These products are not universal garage door remote controls. They are spare parts, not original accessories. Only for the models and frequencies listed, other models or frequencies are not available. Please read all information in the image for reference. Replaces the following remote controls: NOVOFERM MCHS43-2, MTR43-2, MNHS433-02, MNHS433-04; NOVOFERM NOVOTRON 502 MAX43-2, 504 MAX43-4, 512 MIX 43-2; NOVOFERM MINI-NOVOTRON 522, 524, 522 design, 524 design. Flexible: Button with 4 programmable control switches. Thoughtful design - Sliding cover, no more accidental pressing in your pocket or wallet. The latest HF technology ensures better range. Secure code encryption as with original remote controls. Small, compact and lightweight keyring to carry with you.