The Best Modbus Relay of 2022 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best Modbus Relay of 2022. Check our ranking below.
2,114 (random) Reviews Scanned
Rank No. #1
Modbus POE ETH Relay 8-CH Ethernet Relay Module Supports Sending Modbus RTU/Modbus TCP Protocol Commands via Ethernet Port to Control Relay and Various Devices
- Industrial 8-ch relay module supports Modbus RTU protocol/Modbus TCP protocol, supports TCP Server / TCP Client / UDP Mode / UDP Multicast / HTTP / MQTT, PoE port Communication
- Modbus POE ETH Relay 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. Supports DC 7~36V wide range power input and PoE power supply
- Onboard optocoupler isolation, prevent the relay from being interfered by high-voltage circuit, onboard reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection
- High-quality relay, contact rating: ≤10A 250VAC/30VDC, directly controlling 220VAC home appliances, or devices below 30VDC
- 4 LEDs and Network indicators for indicating the MCU status and signal transceiving status. Rail-Mounted ABS protective enclosure design, easy to install, safe to use
Rank No. #2
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 ADI 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. #3
waveshare 8-CH Ethernet Relay Module, Modbus RTU/Modbus TCP Protocol, PoE Port Communication, with Various Isolation and Protection Circuits
- This product is an industrial 8-ch relay module controlled via Ethernet port, adopts Modbus RTU/Modbus TCP protocols, supports PoE power supply, also comes with an ABS rail-mount case.
- The Modbus POE ETH Relay is very easy to use. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for industrial control equipments and/or applications with high communication requirements.
- 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.
- Supports DC 7~36V wide range power input and PoE power supply. Supports relay control through MQTT protocol, comes with Alibaba Cloud MQTT application demo.
- Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit. Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection. High-quality relay, contact rating: ≤10A 250VAC/30VDC.
Rank No. #4
EBYTE Digital Quantity RS485 Ethernet Interface Modbus TCP RTU Relay Output Wireless Transceiver Radio Modem E831-RTU-6060-ETH
- This chapter is a quick introduction to the E831-RTU (6060-ETH) series. It is recommended that the user system read this chapter and follow the instructions. It will have a systematic understanding of the module products.
- Hardware watchdog with high reliability; Multiple indicators indicate the working status;
- The power supply has good functions such as overcurrent, overvoltage and anti-reverse connection.
- Support 6 digital inputs, default dry contacts; Support 6 relay outputs; Support socket connection, support TCP/UDP; Data processing using Modbus TCP/RTU protocol; Support connection to Yitite cloud, command control; Support two working modes, host mode, slave mode, slave can cascade multiple devices through RS485; Support Reload touch button, long press 5s, Modbus device address, RS485 serial baud rate and check digit to restore factory settings;
- Warranty: We have 1 year warranty. If you need user manual or any problems contact with us free.
SaleRank No. #5
Industrial Modbus RTU 8-Channels Relay Module with RS485 Bus Modbus RTU Protocol Onboard Multi Isolation Protection Circuits(Power Isolation, ADI Magnetical Isolation,etc.) 5V Voltage
- Industrial Modbus RTU 8-ch Relay Module, RS485 Bus, Communication interface: RS485. Communication protocol: Standard Modbus RTU protocol
- Configurable device address (1~255), multi devices can be cascaded on RS485 bus
- Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal. Onboard unibody ADI 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, lightning-proof & anti-electrostatic. Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit
- 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
RS485 12V 1 Channel Relay Module MODBUS RTU Serial Multi-Function Relay Module PLC Controller
- Six Working Modes:open, close, inching, self-locking, interlocking, delay.
- Two Command Control Mode :Under AT command,the maximum delay is 9999 seconds.Under MODBUS command,the maximum delay is 255 seconds.
- Input:AT command can be input by serial HyperTerminal (serial assistant) Enter,MODBUS command can be input by serial HyperTerminal (serial assistant) or Modbus Poll.
- Support Device:Under MODBUS command mode, it can support up to 32 devices in parallel.
- Working Voltage & Current:The Working Voltage is DC 12V,Working Current is 11-13mA Standby, one relay turn on 44mA
SaleRank No. #7
Jiawu 16 Channel RS485 Relay, MODBUS RTU Command Control Mode, Durable to Use, RS485 Relay, 11MA Standby Current for Home Factory
- WIDE APPLICATION: The relay board can be widely used for controlling industry equipment and electrical appliances, such as lights, air-conditioning or refrigerator at your home. Working voltage is DC 12V.
- WIDE APPLICATION: The relay board can be widely used for controlling industry equipment and electrical appliances, such as lights, air-conditioning or refrigerator at your home. Working voltage is DC 12V.
- MODBUS RTU COMMAND CONTROL MODE: MODBUS commands can be made serial HyperTerminal (serial assistant) or "Modbus Poll" enter. Under the MODBUS command mode, this relay module can support up to 64 devices in parallel.
- STRONG ANTI-INTERFERENCE: Using small-sized two-way isolated optocoupler, with strong anti-interference ability and stable performance. Standby current (all relays closed) is 11MA. 6 Commands: "Open", "close", "Momentary", "Self-locking", "Interlock" and "Delay".
- TYPICAL APPLICATIONS: 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.
Rank No. #8
LEKU Relay Module - DC 12V 16 Channel MODBUS RTU RS485 Relay Module Board PLC Controller Serial Port Switch
- Standby current (all relays closed) is 11MA, 1 relay open 40MA, 2 relays open 67MA, 3 relays open 95MA, 4 relays open 121MA, 5 relays open 147MA, 6 relays open 173MA, 7 relays open 198MA, 8 relays open 222MA...
- Working voltage is DC 12V.
- MODBUS RTU command control mode, the maximum delay is 255 seconds.
- MODBUS commands can be made serial HyperTerminal (serial assistant) or
- 6 Commands:
Rank No. #9
Waveshare 8-Ch Ethernet Relay Module, Modbus RTU/Modbus TCP Protocol, PoE Port Communication, with Various Isolation and Protection Circuits, Industrial Grade Rail-Mount Case
- 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。 Supports DC 7~36V wide range power input and PoE power supply
- Supports relay control through MQTT protocol, comes with Alibaba Cloud MQTT application demo
- Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit
- 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。 4 LEDs and Network indicators for indicating the MCU status and signal transceiving status
Rank No. #10
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
Last update on 2023-11-20 / Affiliate links / Images from Amazon Product Advertising API
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