Support USB to RS485 communication, using two imported chips, FT232RL and SP485EEN, high-speed communication, stable, reliable and good compatibility. The onboard TVS (transient voltage suppression tube) can effectively suppress the surge voltage and transient spike voltage in the circuit, and it is anti-thunder and anti-static. The onboard self-recovery fuse and protection diode can stable output of current and voltage, prevent overcurrent and overvoltage, and improve impact . There are 3 LED indicators on board for easy viewing of supply and signal transceiver status. Industrial-grade USB to RS485 converter, using two imported chip solutions FT232RL and SP485EEN, stable communication, suitable for various industrial control equipment or applications with high communication requirements. Communication rate: 300-921600bps Host interface: USB Device interface: RS485 USB interface: working level: 5V Interface form: USB-A type interface Interface protection: 200mA self-recovery fuse, ESD electrostatic protection Transmission distance: about 5 meters Interface form: terminal block Interface pins: A+, B-, GND Direction control: hardware automatically distinguishes and controls the direction of data transmission RS485 interface: interface protection: provide 600W thunder protection, surge and 15KV electrostatic protection (onboard 120R balance ) Transmission distance: about 1200 meters (under low-speed conditions) Transmission mode: point-to-many (up to 32 nodes, repeater is recommended for more than 16 nodes) Indicator light: PWR indicator, connected to USB, red light will be on when voltage is detected TXD transmission indicator, red light when data is sent from the USB port RXD receiving indicator, red light when there is data sent back from the device interface Temperature range: -15 Celsius~70 Celsius Humidity range: 5%RH~95%RH Operating system: , Linux, , winCE, Windows10/8.1/8/7/XP Colour: black Material: plastic Size: 53x23.5x14.6mm Package Contents: 1 * USB To RS485 Serial Converter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.