The overload protect system from CPTC is mainly aimed at overloading devices. For example, Top Quality Passenger Hoist Overload Devices and Construction Hoist Overload Indicators and Sensor. When our sensor is stressed, the display will show the corresponding prompt, and the system will stop running when a certain load is reached. As a leading manufacturer of construction safety eq... https://www.cptc-china.com/construction-hoist-safety-device