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ESP32‑S3 Single Channel Relay Module WiFi BLE Development Board 2x20Pin USB UART Burning DC5‑60V Power Supply for Arduino

ESP8266 WiFi Single-Channel Relay Module, 8-80V DC or 5V USB Power, 4MB Flash, UART GPIO, Arduino Development Board

k3 Universal 10PCS 5V 2-Channel Relay Module Optocoupler Isolation Low Level Trigger Expansion Board for Arduino AVR PIC ARM

10PCS 5V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger for Arduino Raspberry Pi ARM AVR

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

5pcs Relay Module 1 Channel 5V 9V 12V 24V Board Shield With Optocoupler Isolation Support High and Low Level Trigger For Arduino

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

ESP32‑S3 Single Channel Relay Module WiFi Bluetooth Development Board USB UART Burning 2x20Pin DC5‑60V Power Supply for Arduino

6pcs New 1 Channel Relay Module 5V 12V Low Level Trigger Expansion Board for Arduino Home Automation

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

ESP32-S3 Relay Module Single-Channel UART Wi-Fi Bluetooth Development Board 5V-10A DC5-60V for Arduino USB Type-C

2pcs 1 Channel Relay Module Delay Off Timer Cycle Trigger Switch for Arduino Home Automation LED Control

Optocoupler Isolation Industrial Relay Module – 4 Channel, Modbus RTU RS232/TTL UART, 7-24V 10A with MAX3232 for Arduino & PLC

DIY Electronic STEM 8 Channel 5v Road Relay Shielding for Arduino 250V/10A AC DC Component Relay Module

50Pcs 1-Channel 5V/12V/24V Relay Module with Optocoupler, High/Low Trigger for Arduino

5/10/20/50PCS 5V 12V 24V 1 2 4 6 8 Channel Relay Module with Optocoupler Relay Output 1 2 4 6 8 Way Relay Module for Arduino

5Pcs Keyes 1 Channel Relay Module 5V Shield AVR ARM PIC DSP SRD-05VDC-SL-C With 20CM 20Pin Dupont Cable for Arduino

10pcs 1 Channel 5/12/24V Relay Module Board Shield With Optocoupler Support High and Low Level Trigger Relays For arduino

5pcs 1 Channel Relay Module High Level Trigger Expansion Board 10A for Arduino Microcontroller Home Automation

AAAN-Mini 1 Channel 12V DC DPDT Relay Module 5 Pack For Switch For PCB Board For Arduino Raspberry Pi

8 Channel 5V Optocoupler Isolated Relay Module, High/Low Level Trigger, AC 220V 10A DC 30V 10A, for PLC Arduino

1 Channel Relay Module 5V Low Level Trigger Expansion Board Shield DC AC 220V PIC AVR DSP ARM MCU for Arduino Raspberry Pi

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

A02F-Mini 1 Channel 12V DC DPDT Relay Module(5 Pack), For Switch PCB Board For Arduino Raspberry Pi

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