Features: The module has a conversion start and stop control terminal. The module has a built-in precision potentiometer for voltmeter experiments. The address can be selected by the MCU, or the jumper cap can be selected. Input and output ports needed are easy to use via pin header. The decoded signal can be latched according to the address code, and only one of the 8 analog input signals is strobed for A/D conversion. Specification: Type: ADC0809 Module 8 input channels: 8-bit A/D converter, ie resolution is 8 bits Conversion time: 100μs (when the clock is 640kHz) and 130μs (when the clock is 500kHz). Power supply: a single +5V power supply Analog input voltage range: 0 ~ +5V, no zero and full scale calibration Working temperature range: -40 -85℃ Power consumption: Low power consumption, about 15mW Weight: Approx. 21g Size: Approx. 5 * 3.6 * 1cm Package list: 1 * Module 4 * Screws 4 * Nuts Note: 1. Please allow slight error due to manual measurement. 2. Different monitor colors may be different. Thanks for your kind understanding. 1、The module has a conversion start and stop control terminal. 2、The module has a built-in precision potentiometer for voltmeter experiments. 3、The address can be selected by the MCU, or the jumper cap can be selected. 4、Input and output ports needed are easy to use via pin header. 5、The decoded signal can be latched according to the address code, and only one of the 8 analog input signals is strobed for A/D conversion.