OTIS at120 Door Transformer FAA24350BM1 Original Spare Part

In this video, we demonstrate the installation and operation of the original OTIS AT120 door operator transformer (FAA24350BM1/BM3). You'll see how this compact toroidal power supply delivers stable low voltage to elevator door systems, ensuring smooth and reliable performance. Stay tuned as we highlight the most important features and real-use results.