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PrefaceThe SM400D Series is manufactured by adopting high-quality components, material and incorporating the latest micro-processor technology, digital closed-loop. It precisely controls speed and position sensing by encoder feedback. The controller operates at 170~260 VAC input normal and heavy door mass. - recommended in less 120kg-. When obstruction on the edges of door occurs, it reopens without the Infrared Light Curtain or Mechanical Safety Edges. The Door modernization on old GAL, OTIS and other door systems eliminates “CAM BOX” or “SLOW DOWN SWITCHES”. The software provides solution for performance improvement at a fraction of the cost of pulley crank arm and connecting links with simple connection way of V-belted
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