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The Best rs232 to 485 converter of 2022 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best rs232 to 485 converter of 2022. Check our ranking below.

2,020 (random num) Reviews Scanned

Rank No. #1
DTech RS232 to RS485 Converter Serial Communication Data Adapter with TX RX LED Indicators and Terminal Board
  • 600W double lightning surge protection and 15KV static protection protects your value devices against high voltage spikes created by either by static electricity or by surges in the supply voltage
  • RS-232 to RS-485 serial converter with TX and RX indicators enables you to easily know the status of sending or receiving data respectively
  • Passive bi-directional RS232 to RS485 converter supports reliable signal transmission over long distance: up to 4000ft over RS-485 link at a high speed
  • Mini RS 232 to 485 adapter supports 2 wire half duplex communication, point to point and point to multi-point network (up to 32 RS-485 devices)
  • The baud rate will be detected and adjusted automatically, up to 115200 bps; industrial RS232 serial adapter is port powered from RS-232 signal, no external power required
Rank No. #2
DTECH RS232 to RS485 RS422 Serial Communication Data Converter Adapter Mini-Size
  • Pro grade RS232 to RS485 / RS422 converter. It easily lets you connect any RS485 or RS422 device directly to COM port
  • Best solution for the communication between serial port and RS485 or RS422 device
  • Unique serial charge pump drive technology, no external power supply, the real three-wire communication (TXD,RXD,GND). No need serial port initialization
  • Supports baud rates up to 115.2 Kbps; Automatic sense serial signal rate
  • Supports a maximum connection distance of 4000ft (1200m)
Rank No. #3
DTECH RS232 to RS485 Serial Converter Adapter with 4 Position Terminal Block for Industrial Long Haul Communication Data Supports 600W Anti-Surge
  • Commercial Grade Bi-Direction RS232 to RS485 Converter used in Industrial Long-haul Communication up to 4000ft (1200 meters)
  • Mini RS 232 to 485 serial adapter enables the connections of multiple bus nodes and 32 devices can be joined in RS-485 network
  • Automatic RX - TX Control; RS-232 to RS-485 Converter controls the “Receive” and “Transmit” modes automatically
  • Up to 115.2kbps baud rate (auto-detect) can be applied to point to point two wire half duplex and point to multi-point two wire half duplex communication
  • A built-in Transient Voltage Suppressor (TVS) supports 600W anti-surge protection on each line of RS485 link which effectively guard devices from damage
Rank No. #4
Rail-Mount RS232 To RS485 Converter (B), Active Digital Isolator, 600W Lightningproof & Anti-Surge,Multi-Isolation Protection,1.2km Transmission Distance,Suitable for Industrial/Agricultural/IoT, etc.
  • 【Primary function】RS232 TO RS485 (B) converter is an industrial-grade rail-type active Active Digital Isolator. Converting the RS232 signal into balanced differential RS485 signal for interface converting, expanding nodes and long-distance communication.
  • 【1200m Long Distance Transmission】 Stable transmission on rate of 300~115200bps, about 1200m transmission distance of RS485, about 15m transmission distance of RS232
  • 【Rail-Mount Support】easy To Combine Multi Rail-Mounted Serial Server Together, More Freely
  • 【Multiple Protection, Safe And Stable】 Onboard power and signal isolation, provide stable isolated voltage, high reliability and strong anti-interference. Onboard Lightningproof Diodes and TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic. Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage protection
  • 【Application Examples】 The RS232 TO RS485 (B) can be widely used for point-to-point, point-to-multipoint, long distance cascaded communication network between two hosts, or between host and MCU/Peripheral. It also can be used in the application scenarios that require RS232 to RS485 conversion such as Industrial Automation and IoT.
Rank No. #5
DTECH RS232 to RS485 Converter Serial Adapter with 4 Position Terminal Block for Long Haul Data Communication Supports 600W Anti-Surge
  • Port powered RS232 to RS485 Converter used in Long-haul Communication up to 4000ft (1200 meters)
  • RS232 to RS485 adapter enables the connections of multiple bus nodes and 32 devices can be joined in RS-485 network
  • Automatic RX - TX Control; RS-232 to RS-485 Converter controls the “Receive” and “Transmit” modes automatically
  • Up to 115.2kbps baud rate (auto-detect) can be applied to point to point two wire half duplex and point to multi-point two wire half duplex communication
  • A built-in Transient Voltage Suppressor (TVS) supports 600W anti-surge protection on each line of RS485 link which effectively guard devices from damage
SaleRank No. #6
Waveshare RS232 to RS485 Converter, Active Digital Isolator, Rail-Mount Support, Multi-Isolation Protection, with LED Indicators
  • ✅Compatible with RS232/RS485 standard, converting the RS232 signal into balanced differential RS485 signal. Stable transmission at the rate of 300~115200bps
  • ✅Onboard unibody power supply isolation, provides stable isolated voltage and 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 suppresses surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic
  • ✅Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provide over-current/over-voltage protection, improve shock proof performance
Rank No. #7
XMSJSIY RS232 to RS485 / RS422 Converter Serial Adapter Communication Data Converter & Adapter Industrial Converter 300-115.2 Kbps Compatible with EIA/TIA RS-232C 、RS-422 / RS-485 Standards
  • RS232 to RS485/RS422 converter can be used as an RS232 to RS485 or RS232 to RS422 converter, without the need for jumper switching. Network connection mode can be connected to the corresponding mode to work adaptively
  • RS232 to RS485/RS422 serial port converter is a passive interface converter with surge capability and can be connected to an external power source. RS232 is a passive port that can also work without relying on stealing power from signal lines. Ordinary interface converters are not equipped with high-energy protection devices, and the wiring board connects the GND terminal to the lightning protection ground
  • RS232 to RS485/RS422 interface is an adaptive interface with zero delay automatic transmission and reception conversion. I/O circuit automatically controls the direction of data flow and enables automatic switching of transmission/reception control
  • Compatible with EIA/TIA RS-232C standard and RS-485/RS-422 standard; RS422 full duplex and RS458 half duplex working modes. Signal: RS232C: TXD, RXD, RTS, CTS, DTR, DSR, DCD, GND-RS485/422: D+/A (TX+), D -/B (TX -) RX+、RX-、GND、+5V-+12V
  • Serial converters are widely used in attendance machines, IC card charging systems, industrial automation control systems, one card access control systems, parking lot systems, self-service banking systems, bus charging systems, canteen meal systems, highway toll station systems, etc
Rank No. #8
EC Buying 2Pcs RS232 to RS485 Serial Converter Adapter - Bidirectional Level Communication Protocol Converter - Serial Port Conversion Module
  • Achieve seamless conversion between RS232 and RS485 protocols with this versatile serial adapter module, extending communication distance up to 1200 meters for improved industrial automation control
  • Benefit from the high-speed data transmission capability of up to 200kbps, allowing for efficient communication between RS-232 and RS485 devices without signal interference, ideal for LED displays and power systems
  • Ensure reliable performance in various environments with robust protection features, including 600W lightning surge protection and +/-15KV ESD protection on the RS-485 interface, enhancing the durability of the serial port module
  • Experience flexibility and convenience with this bidirectional RS485 to RS232 converter, supporting communication rates from 1200 to 115200bps, making it suitable for a wide range of applications in smart building monitoring and electrical systems
  • Enhance your connectivity options with this compact and efficient RS232 to RS485 module, powered by DC 5-30V for seamless integration into existing setups, accommodating over 32 devices on the RS485 network with the option to add a repeater for extended reach
Rank No. #9
waveshare FT232RNL USB to RS232/485/422/TTL Interface Converter, Industrial Isolation
  • Adopt original FT232RNL chip, fast communicating, stable and reliable, better compatibility. Supports multiple communication interface conversion: USB to RS232, USB to RS485, USB to RS422, USB to TTL
  • 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 resistance
  • Fully automatic transceiver circuit with no delay, ensures the USB port communicates with different interfaces fastly and stably, without interfering with each other. Onboard TTL serial 3.3V/5V voltage translator, config the TTL level via switch
  • 3 LEDs for indicating the power and transceiver status. High quality USB-B and RS232 connectors, smoothly plug/pull. Industrial grade metal case, supports wall-mount and rail-mount installations, solid and beautiful, easy to install
Rank No. #10
DTECH Bi-Directional Active RS232 to RS485 RS422 Serial Converter with Surge Protection 600W 15KV ESD DB9 to RJ45 Phoenix Contacts Adapter Power Supply TX RX LEDs for Long Haul Data Communication
  • Bidirectional RS232 to RS485 RS422 converter converts RS-232 signals to RS-485 or RS-422 signal, cable can be connected to either a terminal block or an RJ45 network port
  • 600W lightning surge protected for RS485/RS422 link and 15KV static protection for RS232 link, protects your value devices against high voltage
  • Powered serial adapter with TX, RX and power indicators enables you to easily know the status of sending or receiving data respectively (110/240V AC to 9V DC power supply included)
  • Serial converter supports RS-485 2 wire half duplex and RS-422 4 wire full duplex communication, point to point and point to multi-point network (up to 32 drops protocol devices); no need of handshake signal, data transparent transmission
  • RS 232 to 485 converter with built-in data collision protection control for reliable serial Data Communication; The baud rate will be detected and adjusted automatically, up to 115200 bps

Last update on 2025-05-19 / Affiliate links / Images from Amazon Product Advertising API

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  4. Product Value: This simply is how much bang for the buck you get from your rs232 to 485 converter.
  5. Customer Ratings: Number ratings grade rs232 to 485 converter objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their rs232 to 485 converter.
  7. Product Quality: You don’t always get what you pay for with an rs232 to 485 converter, sometimes less, and sometimes more.
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FAQ:

Q: What is the difference between RS232 and RS485 communication?

A: RS485 and RS232 are only the physical protocol of communication (ie interface standard), RS485 is the differential transmission mode, RS232 is the single-ended transmission mode, but the communication program does not have much difference. The PC is already equipped with RS232, which can be used directly.

Q: Is Modbus the same as RS485?

A: Is Modbus the same as RS485? The answer is no, because both of these are relative concepts that need each other in order to fulfil their purposes. Modbus defines the protocol type and RS485 defines the signal level on the protocol.

Q: What is RS 485 protocol?

A: RS-485 is a US-based telecommunications standard for binary serial communications between devices. It is the protocol, or set of specifications, that needs to be followed to allow devices that implement the standard to speak to each other. The protocol is an updated version of the original serial protocol known as RS-232.

Q: What is RS 485 transceiver?

A: What Is a RS 485 Transceiver? A recommended standard 485 (RS 485) transceiver is an integrated circuit that sends and receives digital signals directly between digital equipment, and uses positive and negative 5 volts direct current (VDC) maximum.

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