1、PREMIUM PERFORMANCE: USB to for RS232 485 Converter adopts the original for FT232RN chip program, high speed telecommunication is stable, reliable and compatible. 2、ONBOARD TVS: On board TVS (Transient Voltage Suppressor) can effectively suppress surge voltage and transient spike voltage in the circuit, lightning guard and anti static. 3、SAFETY GUARD: Onboard self recovery fuses and guard diodes ensure stable output of current and voltage, prevent overcurrent and overvoltage, and improve shock resistance. 4、TOGGLE SWITCH:: Onboard for RS232 485 telecommunication switching circuit, users can flexibly switch the telecommunication type through the toggle switch. Built in 120R resistor for RS485 output termination. 5、EASY TO USE: External 3 LED indicators, easy to check the power supply and signal transmitting and receiving status.ABS environmental protective shell, compact size, portable and easy to use. 1 x USB to for RS232 485 Converter1 x Screwdriver1 x USB Cable Item Type: USB to for RS232 485 ConverterMaterial: ABSHost Interface: USBDevice Interface: for RS232 RS485USB Interface:Operating Level: 5VInterface Format: Type A Male ConnectorInterface Guard: 200mA Self Recovery FuseTransmission Distance: Approx. 5m/ 16.4ftInterface:Interface: Terminal blockTransmission Distance: Approx. 15m/ 49.ftTransmission Mode: Point to PointTelecommunication Rate: 300 bps ~ 921600bpsRS485 Interface:Interface: Terminal blockDirection Control: Hardware automatically determines and controls the direction of data transmission.Interface Guard: Provide TVS tube guard, surge and static guard (onboard 120R balancing resistor)Transmission Distance: Approx. 1200m/ 3937.0ft (at Low Rates)Transmission Mode: Point to Multiple (up to 32 Nodes, Repeaters Are Recommended for More Than 16 Nodes)Telecommunication Rate: 300bps ~ 921600bpsIndicator Light:TXD Transmit indicator, green light when there is data sent from USB port.RXD Receive indicator, blue lighting when there is data sent back from the device interface.Use of the environment:Temperature Range: -15℃ ~ 70℃Humidity Range: 5% ~ 95%RHOperating System: for OS X, for Linux, for Android, for Windows 11 10 8.1 8 7