Description: Measure the voltage and current in the circuit Adopts MAX471 chip, the module directly uses the detected power supply The minimum voltage input detected by this module is 3V The principle of voltage test based on principle of resistive voltage divider design, which reduces the voltage at the terminal interface input by 5 times. Arduino analog input voltage is a maximum of 5V, then the input voltage of the voltage detection module can not be greater than 5V × 5 = 25V (if you use a 3.3V system, the input voltage can not be greater than 3.3Vx5 = 16.5V) Specification: Size: Approx. 23.8 x 22 x 14 mm/0.93 x 0.86 x 0.55 inch VT: voltage detection pin, the detected voltage is 1/5 of the input voltage AT: Current Detection Pin GND: Connect to Arduino GND VOUT/VIN: VOUT=VIN Voltage detection range: 3-25V (Arduino operating voltage: 5V) or 3-16.5V (Arduino operating voltage: 3.3v); Current detection range: 0-3A, Accuracy: 200; Current-to-voltage conversion ratio: 1V/A Package Includes: 1 Piece Voltage Current Sensor Module
