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5V/12V Single Channel for Bluetooth Continuous Electrical Communication IoT Smart Home for Arduino

10PCS KY-019 5V One 1 Channel Relay Module Board Shield For PIC AVR DSP ARM for arduino Relay

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1PCS DC 5V 12V 24V 8 Channel Relay Module Board Shield with Optocoupler / High and Low Level Trigger for Arduino Raspberry Pi

ESP8266 ESP-12F WiFi AC 250V/DC 30V 2 Channel Relay Module Wireless Development Board for Arduino Smart Home

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

WAVGAT 5V 12V low level trigger 1 2 4 8 16 Channel Relay Module interface Board Shield For PIC AVR DSP ARM MCU Arduino

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Modbus RTU 7-24V Relay Module RS485/TTL Anti-reverse 1/2 Channel 485 Switch Input 1 2 Way Optical Coupler 12V Output for Arduino

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5PCS~10PCS KY-019 5V Single Channel Relay Module Shield for PIC AVR DSP Relay Arm

1/10PCS Javino DC 5V/12V/24V 1/2/4/6/8 Channel Relay Module with Optocoupler - High/Low Level Trigger for Arduino Raspberry Pi

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

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