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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.

2,809 Reviews Scanned

SaleRank No. #1
8 Channel Network Relay Module Remote Control Relay Device Ethernet to RS485 TCP Relay Module
  • FIVE WORKING MODES: Through the provided configuration software, you can configure five working modes: TCP server, TCP client, UDP server, UDP client, DNS domain name.
  • STRONG ANTI-INTERFERENCE ABILITY: 8 channel relay module can be connected to external high-current AC contactor and relay, will not crash under strong electromagnetic interference. The product is resistant to high temperatures and can work in the environment of -40 to 85 ° C.
  • EASY TO USE: The true 100M speed enables reliable communication with 0 delay commands. Support 10 TCP client connections under the TCP server. Industrial grade products. Support automatic acquisition of IP.
  • POWER-DOWN SAVE FUNCTION: 8-way relay, 8-channel digital input with full-open and full-off input. With power-down save function (save relay status). With an RS485 port, it supports Ethernet to RS485 transparent transmission.
  • PRODUCT PARAMETERS: Power Supply: DC7~24V(DC socket or wiring terminal can be selected to input power.); DC Connector Size:5.5 x 2.1mm / 0.22 x 0.08in (Outer Diameter - Inner Diameter)
Rank No. #2
Wandisy Relay Module, DC 12V 16 Channel RTU RS485 Relay Board PLC ContrPort Switch Relay Three Phase Output LED Tube Relay for Automation
  • Relay Module --- Working voltage is DC 12V
  • 12V Relay Board --- Commands can be made serial HyperTerminal (serial assistant) or "Poll" enter
  • 16 Channel --- RTU command control mode, the imum delay is 255 seconds
  • Three Phase Output --- 6 commands "Open", "close", "Momentary", "Selflocking", "Interlock" and "Delay"
  • LED Tube Relay --- 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
Rank No. #3
Taidacent 2 Way Modbus Rtu Relay Module Switching Input and Output RS485/TTL Communication Modbus Controlled Modbus Relay Board
  • The dual Modbus relay module is equipped with a mature and stable 8-bit MCU and RS485 level communication chip.
  • Using the standard MODBUS RTU format RS485 communication protocol, it can realize 2 input signal detection and 2 relay output
  • can be used for digital detection or power control occasions.
  • Power supply voltage: DC7-24V with input anti-collision protection
  • Onboard 1 channel 5V, 10A/250VAC 10A/30V DC relay, can continuously pick up 100,000 times, with diode effluent protection, short response time
Rank No. #4
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. #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
Akozon DC 12V Relay Module 16 Channel MODBUS RTU RS485 Relay Module Board PLC Controller Serial Port Switch
  • Working voltage is DC 12V.
  • 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...
  • 6 Commands: "Open", "close", "Momentary", "Self-locking", "Interlock" and "Delay".Under the MODBUS command mode, this relay module can support up to 64 devices in parallel.
  • MODBUS RTU command control mode, the maximum delay is 255 seconds.
  • MODBUS commands can be made serial HyperTerminal (serial assistant) or "Modbus Poll" enter.
Rank No. #7
eletechsup 4 Channel DC 12V RS485 Relay Module Modbus RTU & at Command Remote Control Switch for PLC PTZ Camera Security Monitoring (4)
  • DC 12V 4Ch RS485 Modbus & AT command Relay Board
  • Two instruction-control mode : AT command and MODBUS command
  • Under the MODBUS command mode, it can support up to 32 devices in parallel
  • Size: 80 * 47 * 19.5mm
  • Weight: 57g
SaleRank No. #8
Relay Expansion Board, 32 Channels Expansion Board Relay Module RS485 Remote Control PLC Controller DIN Rail for Smart Control Switch(12V)
  • PLC Controller: Equipped with this RS485 expansion board, you will have better remote control on the equipment.
  • Reliable Work: Relay Expansion Board is supporting multiple working modes, including open, close, jog, self lock, interlock and delay.
  • Easy to Install: The expansion board features DIN35 and C45 rail, it is very easy to install the module. with compact size and light weight.
  • Practical Use: The board with high wiring density, the board is conducive to the miniaturization of electronic equipment.
  • Multi Channels: The standby current is 8mA, and the working current is 1.21A when all the 32 relays are all on.
SaleRank No. #9
FTVOGUE 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 free to contact us at any time.

Last update on 2023-05-31 / Affiliate links / Images from Amazon Product Advertising API

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  2. Features: What bells and whistles matter for an Rs485 Relay Module?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your Rs485 Relay Module.
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  7. Product Quality: You don’t always get what you pay for with an Rs485 Relay Module, sometimes less, and sometimes more.
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