Power and signal compatibility Compatible with both 3.3V and 5.0V power supplies, and supports 3.3V and 5.0V signal levels. Industrialgrade design and protection Uses original imported ICs with an industrialgrade design for strong antiinterference performance. Includes enhanced RS485 lightning protection, suitable for industrial sites and harsh field environments. Operating temperature range: 40°C to +85°C. Longdistance performance Transmission distance can reach kilometers; tested with 850 meters of 2x1.5 cable. Recommended use within 800 meters; for distances beyond 800 meters, add a repeater. Board design and mounting flexibility Halfhole processing design with a board thickness of 0.8 mm. Can be easily used as a motherboard or as a solder terminal. Use scenarios Industrial automation: reliable RS485 communication between sensors, actuators, and controllers in factory environments with potential electrical noise. Harsh or outdoor environments: long cable runs in industrial outdoor settings, where wide temperature tolerance and lightning protection are beneficial. Embedded systems and control cabinets: compact 0.8 mm board suitable for mounting in panels or substituting as a motherboard or terminal block.