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10-1 PCS,3.3V 5v 12V 24V 1 2 4 8 Channel Relay Module With Optocoupler. Output X Way for Arduino 1CH 2CH 4CH 8CH

3-Channel Relay Module 5V with Optocoupler for Arduino Control Supports Low Power Trigger and High Current AC/DC Load Handling

8PCS DC 5v 1 Channel Relay Module Shield for Raspberry Pi with Optocoupler Support High and Low Level Trigger for Arduino

10pcs 5V 1 Way Channel Relay Module SRD-05VDC-SL-C with NO/NC Contact Control Support High Level Trigger for Arduino

5V 4-Channel Relay Expansion Board with Optocoupler - Compatible with Arduino

16 Channel Relay Shield Module DC 5V 12V 24V with Optocoupler LM2576 Microcontrollers Interface Power Relay For Arduino DIY Kit

10-50pcs KY-019 1-Channel Relay Module High-Level Trigger 5V Compatible with Arduino PIC AVR ARM

Wholesale 12V 16 Channel Relay Module for arduino ARM PIC AVR DSP Electronic Relay Plate Belt optocoupler isolation

ESP32S 4 Channel WiFi Bluetooth Relay Module 2.4G Antenna Smart Home IoT DIY Remote Control Switch For Arduino

ESP32-S3 Industrial Relay 8-Channel 8-Ch ESP32-WROOM IOT WiFi Bluetooth HAT For Arduino

【A42U】2X ESP32 Relay Module Dual Channel Wifi Bluetooth Relay Module ESP32-WROOM Secondary Development Board For Arduino

12V/24V 2-Channel Motor Driver Shield Board 30A LED Relay Module for Arduino Raspberry Pi

8-channel Relay DC5-30V Powered ESP32 Wi-Fi + BLE Module ESP32-WROOM Development Board for Arduino IoT ESP Smart Home

Industrial ESP32 Relay 8-Channel ESP32-WROOM 8-Ch IOT WiFi Bluetooth HAT For Arduino

2 PCS IO22C04*2 DC 5-24V 4 Channel Pro mini PLC Board Relay Shield Module for Arduino Multifunction Delay Timer Switch Board

4 Channel 3A 240V Wireless Relay Module Opto-isolator Xbee Bluetooth Bee Relay Shield Expansion Board Switch For Arduino HomeApp

Y43A-ESP8266 Wireless WIFI 4 Channel Relay Module ESP-12F Wifi Development Board For Arduino AC/DC 5V/8-80V Power Supply

12V 16 Channel Relay Module for arduino ARM PIC AVR DSP Electronic Relay Plate Belt optocoupler isolation

1PC ESP8266 4 Channel Wireless WIFI Relay Module AC-DC Switching Power Supply Module ESP-12F Wifi Development Board For Arduino

12v 16 Channel Relay Module Board With Optocoupler Output 16 Way For Arduino 8051 Avr Pic

A93Z ESP32 Relay Module Dual Channel Wifi Bluetooth Relay Module ESP32-WROOM Secondary Development Board For Arduino

8 Channel 12V 24V Relay Shield Module RS485 PLC IO Expanding Board For Arduino NANO V3.0

5Pcs Keyes 5V 1 Channel Relay Module with Anti-Reverse Plug Compatible with Arduino UNO R3 Mega2560

ESP32 Relay 8-Channel 8-Ch ESP32-WROOM IOT WiFi Bluetooth HAT For Arduino

5V 12V * 8-channel solid-state relay module high/low level SSR G3MB-202P 240V 2A output, with Arduino resistor fuse

Relay Module With Optocoupler Relay Output 1 2 4 6 8 Way For Arduino, 5V 12V 1 2 4 6 8 Channel, In stock Protection

ESP32 Relay Module Dual Channel Wifi Bluetooth Relay Module ESP32-WROOM Secondary Development Board For Arduino-Hot

KY-019 5V One 1 Channel Relay Module Board Shield For PIC AVR DSP ARM for arduino Relay

433 MHz Superheterodyne RF Receiver 1527 Learning Code Decoder Switch Module 4CH Output For Arduino Uno Wireless Remote Diy Kit

DFRobot is compatible with Arduino Relay Shield 4-channel relay modules and supports xbee wireless control

10pcs 8-Channel Relay DC 5v with light coupling protection expansion board have a single way 8 road relay module For Arduino

DC5-60V Power Supply Dual-channel WIFI BLE Relay Module ESP32-WROOM Development Board Secondary Development Suitable for Arduino

10pcs 1 2 4 6 8 Channel 12V Relay Module Board Shield with Optocoupler Support High and Low Level Trigger For arduino

10PCS 5V 12V 24V Relay Module 2 Channel Relays Low Level Triggered 2-Way 2CH Relay Board With Optocoupler Expansion For Arduino

5V 16 Channel Relay Module for arduino ARM PIC AVR DSP Electronic Relay Plate Belt optocoupler isolation

10pcs 2 Channel DC 5V 12V 24V Relay Module With Optocoupler Low Level Trigger Expansion Board For Arduino 2 Way Relays Board