The module chip adopts PCF8951 and supports external 4-channel voltage input acquisition (voltage input range 0-5V). This module has a built-in photoresistor and can collect accurate values of ambient light intensity and ambient temperature through AD. The module integrates one circuit of 0-5V voltage input acquisition (the input voltage is adjusted by the blue potentiometer); the module comes with a power indicator light (the indicator light is on when the module is powered on) (lit). The module is equipped with a DA output indicator light. When the module's DA output interface voltage reaches a certain value, the DA output indicator light on the board will light up. The higher the voltage, the more noticeable the indicator light brightness. Module PCB size: 3.6cm x 2.3cm, standard double-sided board, board thickness 1.6mm, beautiful and spacious layout, with through holes around; aperture: 3mm, easy to fix.
