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T-Relay 5V 8-Channel Relay Module for Arduino ESP32 Wireless Development Board with WIFI Bluetooth and Optocoupler Isolation

1/2/4/8 Channel Relay Module 5V 12V 24V Optocoupler Isolation High Low Level Trigger Relay Board For MCU Arduino DIY

6pcs KY 019 5V 12V 1 Channel Relay Module High Level Trigger with Mounting Hole for Arduino Home Automation

ESP32 WiFi Bluetooth Single-Channel Relay Module, AC 220V Input, 30A Relay, UART, Arduino ESP-IDF Development Board

Keyestudio 4 channel 5V Relay Shield module for Arduino UNO R3

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

1-100PCS KY-019 5V One 1 Channel Relay Module Board Shield For PIC AVR DSP ARM For Arduino Relay diy kit electronics components

1 2 4 8 channel relay module board Shielded 5/12/24 V with optocoupler supports high and low level triggering for Arduino

5pcs/lot 1 Channel Relay Module 5V Shield for Arduino AVR ARM PIC DSP SRD-05VDC-SL-C

5V 12V 16 Channel Relay Module for arduino ARM PIC AVR DSP Electronic Relay Plate Belt optocoupler isolation

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

ESP32‑S3 N16R8 WiFi BT Single‑Channel Relay Module Development Board DC5‑60V Compatible with ESP‑IDF for Arduino IDE ESP32 S3

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

6 Channel Relay Module 5V 12V 24V Relay Board Shield With Optocoupler Isolation Support High and Low Level Trigger for Arduino

5PCS 2 Channel 5V 10A Relay Module with Optocoupler Low Level Trigger Expansion Board for Arduino STM32 Raspberry Pi

1/2/4/6/8 Channel Relay Module 5V 12V 24V Relay Board Optocoupler Isolation Control Module for Arduino PLC Smart Home Automation

5V 12V 24V 1 Channel Relay Module Low Level for SCM Household Appliance Control for Arduino 1 Way Relays DIY Electronic Kit

5V 12V 16 Channel Relay Module Interface Board For Arduino PIC ARM DSP PLC With Optocoupler Protection LM2576 Power

Caspian store100Pcs 1-Channel 5V/12V Relay Module, Low Level Trigger, Opto-Isolated for Arduino/SCM

5V 2 Channel Relay Module with Optocoupler Isolation Compatible Arduino ESP32 Raspberry Pi PLC DIY Projects

Single‑Channel Relay ESP32‑S3 N16R8 WiFi Bluetooth Module Development Board DC5‑60V Compatible with ESP‑IDF for Arduino IDE

4-Channel 5v relay module UNO R3 relay control board relay expansion board compatible with Arduino

Relay Module 8 Channel 5V 12V 24V Board Shield With Optocoupler Isolation Support High and Low Level Trigger for Rasp Pi Arduino

10/20/50/100PCS UMW ULN2003A SOP‑16 SMD Darlington Transistor Array Chip 7‑Channel Relay Driver IC For Arduino

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

4 Channel Relay Module 12V 24V Input Optocoupler Isolation BMZ-04R1 for Arduino

2016 China Wholesale 5V 16 Channel Relay Module for arduino ARM PIC AVR DSP Electronic Relay Plate Belt optocoupler isolation

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

HDL 3.3V-5V 1-Channel Relay Module Adjustable Resistance Sensor for Arduino Development Board

10pcs 5V 12V 1 One Channel Relay Module Low Level For SCM Household Appliance Control For arduino DIY Kit

5V 1 One Channel Relay Module Low Level for SCM Household Appliance Control for arduino DIY Kit

DC 12V 1-Channel Relay Module with Optocoupler Isolation, Supports High or Low Level Trigger, Compatible with Arduino and D

KY-019 5V 12V 1 Channel Relay Module for Arduino Raspberry Pi

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

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

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