RS232 to RS485 Bidirectional Converter Module 5V Half Duplex

The RS232-RS485 Converter is a compact bidirectional module that converts a single RS232 port into an RS485 interface, allowing a microcontroller or device to transmit and receive data over long cable runs in electrically noisy environments. It operates from a 5V DC supply, uses half-duplex communication, and supports baud rates from 110 bps up to 256000 bps, covering everything from legacy low-speed protocols to modern high-speed links. The board incorporates the ADUM3201ARZ digital isolator for galvanic isolation between the RS232 and RS485 sides, along with lightning protection and anti-jamming circuitry that can be grounded through the GND terminal for improved surge immunity in field installations. Measuring just 52 × 15 mm and rated for -40°C to +85°C, this RS232 to RS485 converter is suited to industrial automation, LED lighting control, power conversion equipment, and any application where a robust serial link must span distances beyond the reach of a direct RS232 connection. The module handles the direction control internally, so no handshaking lines such as RTS or DTR are required, and it presents a straightforward serial interface that works with standard UART peripherals on microcontrollers and PLCs. This RS485 long distance converter is a practical building block for multi-drop serial networks and isolated industrial communication links.

1. Industrial automation systems requiring isolated long-distance serial links.
2. LED lighting control networks that use RS485 multi-drop communication.
3. Power conversion and energy equipment with serial monitoring interfaces.
4. PLC and microcontroller projects that need to bridge RS232 to RS485.
5. Field installations where lightning protection and anti-jamming are important.
6. Legacy RS232 devices that must communicate over RS485 cable runs.

1. Model: RS232-RS485 Converter.
2. Product type: bidirectional RS232 to RS485 converter module.
3. Operating voltage: 5V DC.
4. Communication mode: half duplex.
5. Supported baud rate: 110 bps to 256000 bps (per source page).
6. Isolation device: ADUM3201ARZ digital isolator.
7. Protection: lightning protection and anti-jamming design; GND terminal can be grounded for surge immunity.
8. Operating temperature: -40°C to +85°C.
9. Dimensions: 52 × 15 mm.
10. Direction control: automatic, no RTS or DTR handshaking required (per comparable converters).