Features: The RS232 to RS485 Serial Converter Adapter ensures industrial reliability with 600W antisurge protections and extended 4000ft communication ranges, ideal for multidevice networking in harsh environment. Featuring builts in TVS protectors and plugs and play design, this converter enables seamlessly bidirectional data flow without external power or complex setups. Design for industrial professionals, system integrators, and automation engineers requiring stable long haul communication between RS232/RS485 devices like PLCs, sensors, and controllers. Optimizes factory automation, HVAC monitoring, or security systems by deploying this adapter in workshops, power plant, or remote outdoor installations with electrical interferences risks. Its metal reinforced housing withstands vibration and extreme temperatures while screws secure fastens wire for uninterrupted data transmission up to 1.2km. Specifications: Component:Plastic+Metal Size:Approx.6.2x3.5x2.1cm/2.44x1.38x0.83inch Name: RS232 to RS485 converter Transmission rate: 300-115.2Kbps Use environment: -20°C-70oC, relative humidity is 5%-95% Environmental protections level: RS485 interfaces with 600W surge protections Transmission medium: twisteds pair wire (wire diameter ≥0.5MM) or shielded wire Transmission distance: less than 1200meters (RS485 terminals) 15meters (RS232) Package Includes: 1pc RS232 to RS485 Converter note: Please allow 1-10mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.