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

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RCmall 5Pcs 1 Channel 5V Relay Module SRD-05VDC-SL-C with NO/NC Contact for Arduino Appliance Control

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LILYGO® T-Relay 5V 8 Channel Relay Module ESP32 Wireless Development Board WIFI Bluetooth With Optocoupler Isolation For Arduino

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Keyestudio High Level 4 Channel 5V Relay Shield Module with LED Pilot Lamp For Arduino UNO R3 For High Current Device Control

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

5V 2 Channel Relay Module Low Level Triggered 2-Way 2CH Relay Module with Optocoupler Expansion for Arduino

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

Industrial ESP32-S3 Relay 8-Channel 8-Ch ESP32-WROOM IOT WiFi Bluetooth HAT Main-Board + Buzzer For Arduino

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

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

5/12/24V Relay Module 2 4 8 16 Channel High Low Electrical Level Trigger With Optocoupler Relays Output For Arduino SingleChip

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

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