RS485 Converter (B)
CH344L | Stable Transmission | Multiple Devices Applicable | Multi-OS Compatible

- Adopts original CH344L chip, fast communicating, stable and reliable, better compatibility
- Supports USB to 4-ch isolated RS485, convenient for expanding multiple RS485 industrial serial devices
- Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
- Onboard unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
- Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & ESD protection
- Onboard self-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock proof performance
- Onboard RS485 output terminal 120R resistors, enabled/disabled via DIP switch
- 10 LEDs for indicating the power, device configuration status and transceiver status
- Industrial grade metal case, supports wall-mount & rail-mount installation, solid and beautiful, easy to install
| PRODUCT TYPE | Industrial isolated USB to RS485 converter | |
|---|---|---|
| Host port | USB | |
| Device port | RS485 | |
| Baudrate | 1200bps ~ 460800bps | |
| USB | Operating voltage | 5V |
| Connector | USB-B | |
| Protection | 500mA resettable fuse, output isolation | |
| isolated RS485 | Connector | Screw terminal |
| Direction control | Hardware automatic control | |
| Protection | 600W lightningproof and surge-suppress, 15KV ESD protection (onboard 120R matching resistors) | |
| Transmission mode | Point-to-multipoints (up to 32 nodes, it is recommended to use repeaters for 16 nodes or more) | |
| INDICATORS | PWR | Power indicator, lights up while the USB is connected and voltage is detected |
| ACT | Status indicator, lights up green while the driver is detected. | |
| RXD | RXD indicator, lights up when the device ports send data back | |
| TXD | TXD indicator, lights up when the USB port is sending data | |
| Operating environment | Temperature | -40 ~ 85℃ |
| Humidity | 5%RH ~ 95%RH | |
| Operating system | Win7/8/8.1/10/11, Mac, Linux, Android | |
- Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
- Onboard unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption

Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & ESD protection. Onboard self-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock proof performance.

Supports Mac, Linux, Android, Windows 11 / 10 / 8.1 / 8 / 7, etc.

The USB Signal Can Be Converted Into 4 Balanced Differential RS485 Signals And The Transmission Rate Is Stable. The Reliable Speed Is 1200~460800bps, The Transmission Distance Is About 1.2km For RS485, And About 5 Meters For USB

Aluminium alloy enclosure with sand blasting and anodic oxidation,
Solid and durable, Fashionable And Good Hand Feeling
Wall-Mount & Rail-Mount Support, More flexible for industrial installation




























