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Amazon.com: Teyleten Robot Nano IO Expansion Shield Sensor Module for Arduino UNO R3 Nano 3pcs : Electronics
Amazon.com: HiLetgo Nano I/O Expansion Sensor Shield for Arduino UNO R1 Nano 3.0 Duemilanove 2009 : Industrial & Scientific
Amazon.com: Velleman VMA05 I/O Shield for Arduino, 1 Grade to 12 Grade, 2.75" L x 2.16" W x 1.18" H : Electronics
Amazon.com: HiLetgo Nano I/O Expansion Sensor Shield for Arduino UNO R1 Nano 3.0 Duemilanove 2009 : Industrial & Scientific
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Amazon.com: AITRIP 10pcs PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module for Arduino & Raspberry Pi : Industrial & Scientific
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Amazon.com: Comimark 3Pcs PCF8574 PCF8574T I2C 8 Bit IO GPIO Expander Module for Arduino & Raspberry Pi : Electronics
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Amazon.com: Prototype Shield I/O Extension Board Expansion Module V3.0 for Arduino Nano : Electronics
