4 relay module

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

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

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

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

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

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

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

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

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

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

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

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

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 Bistable Self Locking Relay Module Button MCU Low Level Control Switch 5V Accuracy

4 Channel WiFi Relay Switch Module Smart Home Remote Control

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

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

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

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

5V 12V 24V USB Relay Control Switch 1 2 4 8 Channel Programmable Computer Control for Smart Home PC Smart Controller

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

Relay Module DC7285V 4 Channel for ESP32 WiFi Bluetooth Relay Module Development Board

7-24V Power Modbus RTU Four-Channel Relay Module RS232/TTL UART 4 Inputs

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

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DC 12V Relay DIN Rail Mount 4?channel 16A Power Relay Interface Module

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

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

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AD22B04 12V 4 Channel DTMF Tone Signal Decoder Relay Phone Remote Control PLC

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

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

Industrial Process Controllers 4 Digital Display Relays Output Power Failure Memory 0 9999 Counting Daily Casual Use

4 Channel Optocoupler Relay Module Board High & Low Trigger 5V12V24V(12V)

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

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

5v 12v 1 2 4 6 8 Way Relay Module for Arduino 1 2 4 6 8 Channel Relay Module with Optocoupler Relay Output In Stock

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

4 Channel Bluetooth Relay Module Phone Wireless Remote Control Switch

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

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

WiFi Relay Module 4 Channel Phone APP Remote Control Switch for Smart Home System ESP826612V

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

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

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 4 Channel Bluetooth Mobile Phone Remote Control Board with Indicator Light DC12V

Relay Remote Switch 4 Channel 10A ABS Wireless Module with 433Mhz Transmitter for Lifter Window

DC5V 4 Channel Relay Module USB Computer Control Relay Switch High Performance Chip LCUS4

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

4 Channel Relay Module USB Drive Free DC Relay Board Computer Control PLC Board 3 Operating Modes 24V

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

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

Relay Module 4 Channel Circuit Automatic Control High Low Level Trigger Electronic Component5V

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

1 Channel Relay Module BT Development Board 4 Working Modes WiFi Networking and Factory Reset

4 Channel Bluetooth Relay Control Module Anti Interference 2.4G RF Remote Control Relay Panel DC12V

ESP8266 Wireless WIFI Relay Module 1/2/4/8 Channel ESP-12F Development Board AC/DC 5V/7-28V/5-80V E-WeLink APP Remote Control

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

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

4 Channels Tuya ZigBee Smart Switch Module RF433 Smart Home Automation DIY Breaker Wireless Relay Voice Control for Alexa Google

5V 4-Channel Bluetooth Relay Four-Channel Bluetooth IoT Smart Home Android Phone APP Remote Switch

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

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

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

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