Features: Supports USB expansion of 4-way RS485, with 4-way simultaneous communication and mutual independence OnboardTVS (Transient Voltage Suppression Tube) can effectively suppress surgevoltage and transientpeak voltage in the circuit, prevent lightningand staticelectricity Board mounted self recovery fuses and protective diodesensure stable output of current and voltage, prevent overvoltage, and improve impact resistance On board RS485 output terminal 120R resistor, which can be switched and enabledfor easy operation Aluminum alloyshell, oxidized frosting treatments, CNCdrilling, sturdy, durable, and exquisite craftsmanship Specifications: Product type: Industrial grade USB to RS485 Converter Host interfaces: USB Device interfaces: RS485 Communication range: 1200bps~460800bps Working level: 5V USB Interfaces form: USB-B type interfaces Interfaces protections: 500mA self recoveryfuse, ESDstatic protections Transmission distance: approximately 5meters RS485 interfaces Interfaces form: wiring terminal Interfaces protections: Provide 600W lightningprotections, surgeprotections, and 15KV staticelectricity protections Transmission distance: Turn on the 120R resistor, with amaximum communication distance of approximately 1200meters (at low speed) Transmission mode: Point to many (up to 32 nodes, with repeaters recommended for more than 16 nodes) Operating system: Win7/8/8.1/10/11 and more Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurme Package includes: 1PC USB to RS485 Converter