Features: The ADC is a precision analog-to-digital converter (ADC). The is a chip which can provide 16-bit sampling precision, using an ultra-small, an MSOP-10 package. Power supply 3.3V, analog input voltage VDD, GND programmable data speed rate 8sps to 860sps. Internal PGA supports sampling precision 16-bit, I2C port through pin select addresses channels quantity. 4 single-ended or 2 differential inputs, programmable comparator 2/3~16. Internal NPT support data through I2C compatible series port to transmit, there are 4 channel I2C address that can be choose, working power supply only need 3.3V; Its main function is detecting analog signal and convert it to digital signal. You can connect analog sensors, such as joystick, NTC, temperature, dust sensor, for Raspberry Pi through this converter, and read collected signal. Specifications: Compatibility: For Raspberry Pi 3/2/B+ Size: 6.5*3cm/2.5*1.1in Weight: 15g(approx.) Package Includes: 1 x ADC Module Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.