The Best Rs485 Relay Module of 2022 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best Rs485 Relay Module of 2022. Check our ranking below.
2,706 Reviews Scanned
Rank No. #1
DC 12V 16 Channel MODBUS RTU RS485 Relay Module Board PLC Controller Serial Port Switch
- This relay module board's working voltage is DC 12V and standby current is11mA.Under the MODBUS command mode, this relay module can support up to 64 devices in parallel.
- MODBUS commands can be made serial HyperTerminal (serial assistant) or "Modbus Poll" enter,and MODBUS RTU command control mode, the maximum delay is 255 seconds.
- MODBUS command mode (HEX), you can control a variety of ways: Serial Hyper Terminal Control (need to manually add the CRC), Modbus Poll software control (software automatically add the CRC), PLC or MCU process control.
- This relay module has 6 commands: "Open", "close", "Momentary", "Self-locking", "Interlock" and "Delay".
- We strive to provide you with the highest quality product and the best customer experience, if you're not entirely satisfied, please just feel to us at any time.
Rank No. #2
Waveshare Industrial 6-Channel ESP32-S3 WiFi Relay Module, Supports WiFi/Bluetooth/RS485 Control, Onboard RS485 / Pico HAT Interfaces, with Multiple Isolation Protection Circuits
- Based on ESP32-S3 microcontroller with Xtensa 32-bit LX7 dual-core processor, capable of running at 240 MHz
- Integrated 2.4GHz Wi-Fi and Bluetooth LE dual-mode wireless communication, with superior RF performance. High quality relay, contact rating: ≤10A 250VAC/30VDC
- Onboard isolated RS485 interface, for connecting to various RS485 Modbus industrial modules or sensors
- Onboard 40PIN header compatible with some Raspberry Pi Pico HAT, for expanding more functions such as RTC / CAN / RS232 / LoRa / sensor, etc.
- Onboard USB Type-C port for power supply, firmware downloading and debugging. Onboard power supply screw terminal, supports 7~36V wide voltage input, suitable for industrial applications
Rank No. #3
JESSINIE 2Pcs 1 Channel Switch Relay Module Modbus Rtu Switching Input Output Relays Board with Anti-Reverse Connection Protection RS485 TTL Communication
- On-board mature and stable 8bit MCU and MAX485 level conversion chips
- Output signal: relay switch signal, supports manual, flash-off and flash-off modes, the delay base of flash-off/flash-off is 0.1S, and the maximum flash-off/flash-off time can be set to be 0xFFFF * 0.1S = 6553.5S
- Onboard 1 Channel 5V,10A/250V AC 10A/30V DC relay, which can be continuously closed for 100,000 times, with diode laxative protection, short response time
- Communication protocol: supports standard Modbus RTU protocol, communication interface: supports RS485/TTL UART interface, communication baud rate: 4800/9600/19200, default 9600bps, supports power failure storage
- Optocoupler input signal range: DC3.3-30V (this input cannot be used for relay control); Power supply voltage: DC7-24V, supports DC seat/5.08mm terminal power supply, with input anti-reverse connection protection
Rank No. #4
JESSINIE Modbus RTU 4 Channel Relay Module with RS485/TTL UART, 1 Input 1 Output, 7-24V Anti-Reverse Protection for Industrial Home Automation
- Versatile Control**: With Bluetooth-compatible wireless control up to 10 meters, manage your home or industrial automation systems effortlessly. Connect easily with your mobile phone and enjoy reliable, hands-free operation.
- Robust and Reliable**: Equipped with a high-capacity 12V relay that supports up to 10A/250V AC and 10A/30V DC, this module is designed to handle demanding electrical loads with ease, ensuring long-term durability with over 100,000 activation cycles.
- Safety First**: Built-in diode efflux protection and anti-reverse power protection shield your devices from electrical mishaps, providing peace of mind with every use.
- Easy Integration**: Compatible with both RS485 and TTL UART interfaces, this relay module seamlessly integrates into a wide range of systems, offering flexibility for diverse automation projects.
- Clear Status Indicators**: Stay informed with LED indicators for Bluetooth connection and relay status, ensuring you always know when your system is ready and operational.
Rank No. #5
Waveshare Industrial Modbus RTU 8-ch Relay Module with RS485 Interface Multi Isolation Protection Circuits Comes with an ABS Enclosure
- Configurable device address (1~255), multi devices can be cascaded on RS485 bus. Features flash-on, flash-off function, by passing argument to the command, it is possible to turn on the relay for a while and then close it automatically
- Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal. Onboard unibody magnetical 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, llgthningproof & anti-electrostatic. Onboard Optocoupler isolation, prevent interference from external high-voltage circuit connected to the relay
- Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection. High quality relay, contact rating: ≤10A 250VAC/30VDC
- Rail-mounted ABS plastic enclosure, easy to install, safe to use. 3 LEDs for indicating the MCU status and signal transceiving status
Rank No. #6
Eujgoov RS485 Relay Board 24V Industrial Relay Module 8 Input 8 Output DIN Rail PLC Expansion Module for PLC Control
- 6 WORKING MODES-- This relay board features 6 different working modes, including open, close, jog, self-lock, interlock, and delay. In command mode, the relay board can 64 devices can be used in parallel.
- FEATURE-- The default baud rate is 9600BPS, and the baud rate 2400 4800 19200 BPS can be selected through jumpers, maximum delay under command is 255 seconds.
- LOW POWER CONSUMPTION-- Relay board has many advantages, such as strong anti-interference performance, low working power consumption, large capacity and other .
- EASY In addition to the serial port hyper terminal input, the command can also be input by other.
- HIGH QUALITY-- This relay module adopts material and has a professional structure, long service life and simple
Rank No. #7
Waveshare Modbus RTU 32-Ch Relay Module, RS485 Interface, with Multiple Isolation Protection Circuits, Industrial-Grade, Rail-Mount Case
- Configurable device address (1~255), multi devices can be cascaded on RS485 bus. Features flash-on, flash-off function, it is possible to turn on the relay for a while and then close it automatically via the command
- Onboard voltage regulator chip, supports 7~36V wide voltage power supply. Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
- Onboard unibody magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption. Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightningproof & anti-electrostatic
- Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit. Onboard dedicated relay driver chip, with built-in freewheeling diode protection, the driving ability is stronger and more stable
- Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection. High quality relay, contact rating: ≤10A 250VAC/30VDC. Rail-mounted ABS case, easy to install, safe to use. 3 LEDs for indicating the MCU status and signal transceiving status
Rank No. #8
ZEXKENS 32/16/8 Channel DC12V RS485 Relays Module Supports RTU Enhances Home and Industrial Automation
- With its ability to up to 64 devices in paralleled using for commands, this Relays module is essential component for expanding and optimizing your automation networking.
- This versatiled Relays module supports six operational modes including "On", "Off", "Momentary", locking", and "Delay", with a delay of 255seconds, ensuring flexibility for various applications.
- for factory automation control, home device management, and laboratory testing environment where precise and adaptable Relays operating.
- For industrial automation engineers, home enthusiasts, and electronic project developers seeking reliabled and efficient control solution.
- Enhances your automation projects with the 32/16/8 Channel DC12V RS485 Relays Module,featuresModbus RTU for seamlessly remoted control and integration in complex systems.
Rank No. #9
JESSINIE Modbus-Rtu 7-24V 4 Channel Relay Module Switch Modbus RTU Switch Input Output 5V RS485 TTL Communication Anti-Reverse Connection
- On-board mature and stable 8bit MCU and MAX485 level conversion chips
- Communication protocol: supports standard Modbus RTU protocol, communication interface: supports RS485/TTL UART interface, communication baud rate: 4800/9600/19200, default 9600bps, supports power failure storage
- Optocoupler input signal range: DC3.3-30V (this input cannot be used for relay control); Power supply voltage: DC7-24V, supports DC seat/5.08mm terminal power supply, with input anti-reverse connection protection
- Output signal: relay switch signal, supports manual, flash-off and flash-off modes, the delay base of flash-off/flash-off is 0.1S, and the maximum flash-off/flash-off time can be set to be 0xFFFF * 0.1S = 6553.5S
- Onboard 4 Channel 5V,10A/250V AC 10A/30V DC relay, which can be continuously closed for 100,000 times, with diode laxative protection, short response time
Rank No. #10
Industrial 8-Ch ESP32-S3 WiFi Relay Module, Onboard RS485, Digital Input, Relay, PoE ETH Port and Multiple Isolation Protection Circuits, Supports RS485 and Bluetooth/WiFi Remote Control
- Industrial 8-Channel ESP32-S3 WiFi Relay Module, based on ESP32-S3 microcontroller, built-in 32-bit LX7 dual-core processor, up to 240MHz, integrated 2.4GHz Wi-Fi and Bluetooth LE dual-mode wireless communication, supports Arduino IDE
- Industrial 8-Ch WiFi Network Relay Module, onboard digital input, RS485, and ethernet port interfaces. Built-in multiple isolation protection circuits such as power isolation and optocoupler isolation, more safe, stable and reliable
- Supports RS485 and Bluetooth / WIFi Remote Control, onboard 8-ch relays and 8-ch digital inputs, contact rating of the onboard relay up to 10A 250V AC / 30V DC, directly controlling 220VAC home appliances, or devices below 30V DC
- Digital Input, supports passive (dry contact) and active (wet contact) digital input, with bi-directional optocoupler isolation
- Built-in PoE module, providing both network connection and power supply in one cable
Last update on 2025-11-25 / Affiliate links / Images from Amazon Product Advertising API
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