4 relay module

5V/12V/24V Relay Control Board: 1/2/4/6/8 Channels with Optocoupler & Indicator Light

DC6-40V 4-Channel Programmable Digital Time Relay Timer Controller Delay Switch Module Independent Timing Cycle LCD Display

ESP32-S3 Dev Board with 4-Inch LCD, TV Box Control, Relay, LVGL Support, RS485

4 Channel Relay Module 30A Load Current with Optocoupler Isolation Supports High and Low Triger 5V

433MHz RF Wireless Light Switch 16A Relay Breaker with 4-Key Remote Control Smart Home for LED Lamp Garage Door Automation

5V/12V/24V 1/2/4/8 Channels Relay Module Board Good Anti-interference Strong Driving Ability Components Sturdy

12V 4-Channel Bluetooth Relay Module Four-Channel Bluetooth Smart Home Android Phone APP Remote Switch

5V 4 Channel Relay Shield Module for Arduino UNO R3 ARM PIC AVR DSP Electronic 4 Way Four Channel Relay Control Expansion Board

4 Channel 5v Relay Shield Module, Four Channel Relay Control Board Relay Expansion Board for Arduino For UNO R3 Mega 2560

Mini 4-Channel DC 12V 30A Relay Module Control Board High/Low Trigger New

4 Channel Relay Module ESP8266 Chip WiFi Wireless Control Quad Relay Board for Electronic Equipment

5V 12V 4 Channel Relay Module Shield for Arduino ARM PIC AVR DSP Electronic with Optocoupler Relay Output 4 Way Relay

5V 12V 24V Relay 1 2 4 Channel SSR Low Level Solid State Relay Module 250V 2A for Arduino

2025 Trend Wireless ESP32 RS485 Modbus Relay Module With 4 Channel, TYPE-C 7-24V, And CH340 For Modbus

1/2/4/6/8-channel relay module

4-Channel 5V Relay Module | Compatible with UNO R3, Mega 1280, DSP ARM, PIC AVR, Raspberry Pi | Status LEDs | High Power Control

4CH Zigbee Smart Life Gate Switch Module 12V 24V 32V 220V 1/2/4 Channel RF433 Relay for 2MQTT Gateway SmartThings Tuya APP

Tuya WiFi Smart Switch 1/2/3/4 Gang 2-way Control Light Breaker Mini DIY Switches Module Relay Smart Life For Alexa Google Home

4 Channel WiFi Relay Switch Module Smart Home Remote Control

4 Channel 5V Latch Relay IO25C04 Relay Module Self Locking Relay Module DC Motors Control

5V/12V 4-Channel Bluetooth Relay IoT Smart Home Phone APP Remote Switch New Version

eWeLink Smart Wifi Switch 4 Gang Universal Wireless Light Switch 433MHz RF Remote Wifi Relay Equal To 4CH Pro R2

5V Relay 1 2 4 8 Channel For OMRON SSR High Low Level Solid State Relay Module 250V 2A For Arduino

12V Modbus RTU Relay Module: 4-Channel Relay Output, 4-Channel Digital Input, TTL Pin Header, RS-485 Communication

4 Channel 5V With Photocoupler Relay Module For Raspberry Pi ARM AVR DSP PIC

5V Solid State Relay Module 4 Channels 5V Solid State Relay Module Circuit Modification

4 Channel Bluetooth Relay Module Remote Control Strong Anti Interference Capability for Smart Home DC12V

4‑20mA Input Smart Solid State Relay Current Voltage Regulating Module 28‑250VAC Stepless Regulation

2pc 1/2/4/8 Channel 5v Relay Module With Optocoupler Relay Output 1 2 4 6 Relay Module 8 Channels Low Level Trigger Output XWay

4 Channel DC 12V 30A Relay Module Control Board Optocoupler Isolation High Low Trigger

4 Channel Optocoupler Relay Module Board High & Low Trigger 5V 12V 24V(12V)

AC 100 250V 30A 4 Channel Relay High Low Level Trigger Module

8 36V 4 Channel Multifunction Time Delay Relay Interface Board Module Optocoupler LED

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2Pcs Relay Module Control Board DC PLC Din Rail Mounting 4 Channel 1 NO 1 NC BEM1S‑4MZ AC 250V

High Power Four Way Relay Module Control Panel Optocoupler Isolation 30A YYG 4 DC5V

4 Channels Flip Flop Low Pulse Trigger Self Locking Relay Module 6 24VDC

4 Channel Bluetooth Relay Module Phone Wireless Remote Control Switch

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Relay Module 9600bps Automatic Adjustment Switching Circuit 4 Channel Relay Module Board with Optocoupler for Modbus

Current Detection Sensor Module Digital Display 4‑20mA Relay Module Component DC12V

4 Channel 24V Computer USB Smart Switch Controller PC Relay Drive Module Expansion Board

4 Channel Relay Module 30A Load Current with Optocoupler Isolation Supports High and Low Triger 5V 12Volt 24Volt

4 Channel Relay Module PCB RTU Relays Board Switch RS485 TTL Reverse Prevention Connection

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12V 4 Channel Bluetooth Relay Smart Module Mobile Phone APP Remote Control for Android

1Pcs 4 Channel AC 110-220V Controller Decoder RGB LED Strip Lights DMX512 Relays Use With Rail Case For Led Lamps

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433MHz Universal Wireless Switch Mini Relay Receiver Module 4 Styles of Remote Controls For LED Light Smart Home Automation

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4-Channel Bluetooth 5.0 Relay BLE Bluetooth Mesh Networking Phone APP Remote Switch

6Pin CDI Module Ignition Coil 4Pin Rectifier Starter Relay Solenoid for 4 Stroke 50cc 70cc 90cc 110cc 125cc ATV

4-Way Relays Board Module 4CH Expansion Board Power Relays Module Plate Stackable Expand GPIO Pin for Rpi4B/Rpi3B+/Rpi3B

4-Way RS485 Modbus RTU High-Current Relay Module with Rail Protection

3 Way 4 Way Smart Wifi2.4GHz+ Bluetooth Relay Module AC90-265V 10A No Programming Required Remote Control Relay Switch With Case

RS485 Relay Module 4 Channel Relay Control Module Board with Hardware Reset Function DC12V

Relay Module 4 Channel High Level Trigger Relay Expansion Board for Windows for OS X for IOS for

LCUS-4 Four-Channel USB Relay Module USB Smart Control Switch USB Computer Switch

HID Driver-Free USB Computer USB Control Switch 4-Channel 5V Relay Module PC Smart Control Plug-and-Play

RS232 Relay Module Opto 4 Channel Serial Port Control Relay Module with 8 Bit MCU SP3232

Relay Module 4 Channel Solid State Relay Module With Fuse for DIY Electronics Enthusiasts

Adjustable GPIO Relay Module with Optocoupler PCB 4 Channel High Low Level Control Strong Driving

LCSC LCUS-4 Four-Channel USB Relay Module Smart Control Switch New Version

Modbus RTU Four-Channel Relay Module RS485/TTL UART 4 Inputs 4 Outputs

Domestic Simple PLC Industrial Control Board Compatible with Mitsubishi FX3U 4 Inputs 2 Relay Outputs

Domestic Simple PLC Industrial Control Board Compatible with Mitsubishi FX3U 6 Inputs 4 Relay Outputs

4 Channel Relay Industrial Grade Optocoupler Isolation Guide Rail USB TTL Control Relay Module

1 2 4 6 8 Channel 5V 12V 24V Relay Module Board Shield with Optocoupler Support High and Low Level Trigger for Arduino

DC State Relay DIN Rail Relay Module MRD-060D2 Ultra Thin 6.2mm State Relay Module Input 4-32VDC NO Ultra Thin Relay

Relay Module WIFI 4?Channel ESP8266 Development Board for Wireless Control DC7?12V5V USB

RTU 4 Channel Relay Module With 485 Interface Built In Optocoupler Isolation for Industrial

4 Channel Relay Module Multifunctional RS485 Relay Board for Electrical Equipment DC 12V

4 Channel USB To 340 Module Type C Interface Serial Control Relay Module Optocoupler Safety 5V

4 Channel Receiving Relay Module 4CH Infrared Remote Transceiver Receiver Control Switch Set 24V