DC 0–25V Voltage Sensor for Arduino

Product Description

Description: This module is based on a resistive voltage divider principle, reducing the input voltage at the interface terminal by a factor of 5. Since the Arduino analog input can handle up to 5 V, the input voltage to the voltage detection module must not exceed 5 V × 5 = 25 V. (If used with a 3.3 V system, the input voltage must not exceed 3.3 V × 5 = 16.5 V.)

Because Arduino AVR chips use a 10‑bit ADC, the analog resolution is 0.00489 V (5 V / 1023). Therefore, the voltage detection module can detect a minimum input voltage of 0.00489 V × 5 = 0.02445 V.

Specifications:

• Input voltage range: DC 0–25 V

• Voltage detection range: DC 0.02445 V – 25 V

• Analog voltage resolution: 0.00489 V

• DC input connector: Cathode terminal connected to VCC negative pole, GND

• Output interface: • +5 V or 3.3 V • – GND • S pin → Arduino AD pin