Security locks are generally magnetic, and some are plug-in. One end of the safety lock is connected with a clip. When exercising, the clip must be clipped to the clothes. If there is an accident, the safety lock will be pulled open and the running machine will stop running to protect the athletes. If the safety lock is broken, you can go to the after-sales department to replace it.

Treadmill is a routine fitness equipment in family and gym, the simplest one in today's family fitness equipment, and the best choice for family fitness equipment. 1965, the world's first household treadmill was born in Tantelli, northern Europe, and the designer modified it according to the principle of speed transmission belt.

The birth of this treadmill represents a real home treadmill in the modern sense, and people in Europe and the United States began to accept running at home. However, the treadmill can only walk on it at first, and running is a bit uncomfortable.

Reference: Baidu Encyclopedia "Treadmill"