Buying a Novoferm remote control requires you to pay attention to several criteria. In fact, two remote controls of the same brand may not be compatible. That's why you need to choose the remote control by its frequency, number of buttons and channels, color, and coding type. The Novoferm NOVOTRON 502 MAX43-2 gate remote control operates on the 433.92 MHz frequency, so it can replace Novoferm transmitters with the same frequency. This small gray-blue box is equipped with two gray buttons. This gate signal uses self-learning coding. As mentioned, the Novoferm Novotron 502 MAX43-2 remote control is compatible with NOVOFERM MCHS43-2, NOVOFERM MHS43-4, and MNHS433-02 transmitters. Product dimensions (L x W x H) 6.8 x 3.8 x 1.1 cm Batteries: 1 CR2 batteries required. Reference MAX 43-2 Power supply type Battery Number of items 2 Special features NOVOFERM NOVOTRON 502 REMOTE CONTROL, 2 BUTTONS, FREQUENCY 433.92MHz, RECORDING IN RECEIVER, BATTERIES INCLUDED (2 X CR2016) Batteries included? No Battery(ies) / Battery(ies) required No Battery type / battery Alkaline Weight 18.1 grams