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Amazon.com: SainSmart 16-Channel 12V Relay Module Board for Arduino DSP AVR PIC ARM : Electronics
SainSmart 5V 2A 4 Channel Solid State Relay Module High Level Trigger Black for Arduino Uno Duemilanove MEGA2560 MEGA1280 ARM DSP PIC: Amazon.com: Industrial & Scientific
Amazon.com: CANADUINO 4 Relay Module 10A / 250V Opto-Isolated Inputs 3-24V for Arduino etc. : Electronics
Ac/dc Power Supply Esp8266 Wireless Wifi 2 Channel 4 Channel Relay Module Esp-12f Wifi Development Board For Arduino 5v/8-80v - Integrated Circuits - AliExpress
SainSmart USB 4 Channel DC 12V Relay Module Automation for Arduino Raspberry Pi DSP AVR PIC ARM: Usb Relay Board: Amazon.com: Industrial & Scientific
JBtek 4 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM : Electronics - Amazon.com
Excelity 2 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM - - Amazon.com
4 Relay Module 5V opto-isolated
Amazon.com: AITRIP 4 Channel 5V Solid State Relay Module Board High Level Trigger Compatible with Uno Duemilanove MEGA2560 MEGA1280 ARM DSP PIC : Industrial & Scientific
Amazon.com: JBtek 4 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM : Electronics
Scheda relè a 4 canali per relè con optoaccoppiatore Scheda di espansione trigger a basso livello per Arduino 5V / 12V / 24V(5V) : Amazon.it: Fai da te
5v Relay Module 1 Channel Relay Board for Raspberry Pi with Opto-Isolated High or Low Level Trigger 5v 1 Channel Relay Switch for Arduino: Amazon.com: Industrial & Scientific
Arduino 4 Relays Shield — Arduino Online Shop
Amazon.com: YWBL-WH 30A 4 Channel Relay Module Expansion Board with Optocoupler for Arduino Raspberry Pi DSP AVR PIC ARM (5VDC) : Electronics
5v 12v 1 2 4 6 8 Channel Relay Module With Optocoupler Relay Output 1 2 4 6 8 Way Relay Module For Arduino In Stock - Relays - AliExpress