The CH-H0102 loop controller is independently researched and developed by our company. It controls the power supply of lighting fixtures through a human-machine interface and monitors the closed state of the power supply loop circuit, which is widely used for the highway road lights and tunnel lighting, and the industry lighting such as led high bay light & low bay light at warehouse and factory lighting projects. The equipment adopts standard industrial bus RS485 technology, the communication distance can reach 2000 meters without repeater and range of visibility; 7 levels of repeaters can be set in the scene, and the maximum distance can be up to 7000 meters according to the calculation of 1000 meters for each level of repeater.