The sensor is made of alloy steel or stainless steel, with a unique side pressure structure.  The working principle is that the wire rope is fixed on the sensor through u-shaped bolts (or pressing blocks + bolts) and slots at both ends. When the wire rope is pulled, the force is used on the sensor through guiding rotation.  It is suitable for measuring and controlling wire rope tension, mainly used for electric hoist, material hoist, wire rope straight hanging and other lifting equipment.