DS18B20 Temperature Sensor Module +I2C IIC RTC DS1307 AT24C32 Real Time Clock Module for Arduino AVR ARM PIC UNO Module: Amazon.com: Industrial & Scientific
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Amazon.com: DAOKI 5Pcs RTC I2C Module Arduino I2C RTC DS1307 AT24C32 Real Time Clock Module 24C32 Memory High Precision for AVR ARM PIC SMD Compatible with Arduino with 60 Pin : Electronics
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