💎【 Introduction 】
This module is designed based on the principle of resistance voltage division, which can reduce the input voltage of terminal interface by 5 times. The analog input voltage of ARDUIN is 5V, so the input voltage of the voltage detection module should not be greater than 5V×5=25V

(If the 3.3V system is used, the input voltage cannot be greater than 3.3Vx5=16.5V).
Because the Arduino AVR chip has 10-bit AD, the analog resolution of the module is 0.00489V (5V/1023), so the minimum voltage of the input voltage detection module is 0.00489Vx5=0.02445V.

【 Parameter 】
💎 Voltage input range: DC0~25V
💎 Voltage detection range: DC0.02445V~25V
💎 Voltage analog resolution: 0.00489V
💎DC input interface: The terminal is connected to VCC and the terminal is connected to GND
💎 Output interface: "+" connects to 5/3.3V, "-" connects to GND, and "S" connects to the AD pin of the ARDUIN