Quiet. Durable. Strong. The SOMMER evo+ Direct Drive garage door opener is the only one of its kind which offers Europe’s leading innovative technology. Unlike conventional garage door opener that use a noisy chain, belt or screw the Direct Drive has only one moving part. The motor glides silently along the chain which is embedded in a sturdy steel rail. Extremely quiet garage door opener with virtually no vibrations. Perfect for homes with living spaces above the garage. Very smooth operation with soft start and stop technology. Because the motor is located at the door instead of the back of the opener it maximizes the power.