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3X USB to RS485/RS232 Communication Module Bidirectional Half-Duplex Serial Line Converter Communication Module

<ul><li>Support USB to RS485/RS232 communication (switched through DIP switch). Using the new CH343G chip, plug and play, compatible with series, MacOS series, Linux and other systems.The on-board (transient voltage suppressor) can effectively suppress surge voltages in the circuit, instantaneous voltages, and protect against static electricity.</li><li>The on-board self-restoring fuse and protection diode can stable output of current and voltage, prevent overcurrent and overvoltage, and improve impact resistance.There are three LED indicators on the board for easy viewing of the power signal sending and receiving status.</li><li>Product type: Industrial grade USB to RS485/232 converter; Communication rate: 50bps~1000000bps; Host interface: USB; Device interface: RS485/RS232 (switched by DIP switch)</li><li>USB interface:Working level: 5V, Interface form: USB-A type interface, Interface protection: 200MA recovery fuse, ESD static protection, Transmission distance: about 5 meters</li></ul>

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RS485/RS232 interface: Interface form: terminal block Interface pins: GND, A+ (TXD), B- (RXD) Direction control: hardware automatically determines and controls the direction of data transmission Interface protection: Provides 600w surge and 15KV electrostatic protection (onboard 120R balanced resistor) Transmission distance: RS485 (about 1200 meters), RS232 (about 10 meters) at low speed Transmission mode: point-to-multiple (up to 32 nodes, it is recommended to add a repeater RS232 for more than 16 nodes (one point-to-point interface can only connect one device, if multiple devices need to be connected, a repeater is required) Indicator light: PWR: Power indicator light, when connected to USB, the light turn on when voltage is detected. TXD: Transmit indicator light, the light turns on when data is sent from the USB port. RXD: Receiving indicator, lights up when the USB interface receives data. USB to RS485/RS232 interface description: GND: Peripheral connection GND A+TXD: RS485 connects to A, RS232 connects to RXD B-RXD: RS485 connects to B, RS232 connects to TXD Colour:Black Material:plastics Different batches have slightly different labels, which does not affect the use Package Contents: 3 x module Only the above package content, other products are not included. Note: Light reflection 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.

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