1. The FT232RNL chip is adopted, and high-speed communication is stable, and compatible. Support multiple communication interface conversion: USB to RS232, USB to RS485, USB to RS422, USB to TTL2. The on-board self- fuse and protection diode can the stable output of current and voltage, prevent over-current and over-voltage, and the impact resistance3. On-board automatic transceiver conversion circuit ensures fast and stable communication between USB terminal and different interfaces without interference. Onboard TTL serial port 3.3V and 5V level conversion circuit, users can switch TTL communication level through switchProduct type: industrial digital isolated converter; USB interface: Working level: 5V; Interface type: USB-B interface; Interface protection: 200mA self- fuse, isolated output; RS232 interface: Interface type: DB9 male; Interface protection: tube protection, surge and static protection; Transmission mode: point-to-point; Communication rate: 300bps~3MbpsRS485/422 interface: Interface type: terminal block; Direction control: the hardware automatically determines and controls the data transmission direction; Interface protection: 600W -protection, surge and 15KV static protection (leave two 120R balance resistance jumper caps to enable)Transmission mode: point-to-many (485 mode can connect up to 32 nodes, and repeaters are recommended for more than 16 nodes; 422 mode can connect up to 256 nodes, and repeaters are recommended for more than 16 nodes)Communication rate: 300bps~3MbpsTTL (UART) interface:Working level: 3.3V/5VInterface type: terminal blockInterface pins: TXD, RXD, GND, 5V/3.3VInterface protection: clamping protection diode is provided to prevent overvoltage and negative pressure and impact interferenceTransmission mode: point-to-pointCommunication rate: 300 ~3Mbpsindicator light:PWR: power indicator, connected to USB, red light when voltage is detectedTXD: send indicator light, when data is sent from USB portRXD: receiving indicator light, which is on when data is sent back from the device interfaceUse environment:Temperature range: - 15~70 Humidity range: 5%~95% RH: , Linux, Android, Windows 11/10/8.1/8/7Product size: 84.3 x 78 x 24.3mmcolor:BlackMaterial:ABS+metalPackage Contents:1 x USB TO RS232/485/422/TTL converter1 x Guide rail clip1 x USB cable type A male to type B male about 1.2 1 x ScrewdriverOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.