Voltage Detection Module for Arduino — 25V Maximum Analogue Input
This voltage detection module uses a resistor voltage divider to scale voltages from 0V–25V down to 0V–5V, making higher-voltage DC systems readable by a standard Arduino ADC pin. The divider ratio is 5:1 — 5V at the input pin corresponds to 25V on the measurement terminals. At 5V Arduino supply, the 10-bit ADC resolves 25V/1024 = approximately 24.4mV per step.
- 0V–25V measurement range — 5:1 resistor divider
- Analogue output — 0–5V proportional output for Arduino ADC
- Screw terminal input — connects directly to the measured voltage rail
- Signal pin output — standard 3-pin header (GND, VCC, S)
- 3.3V and 5V compatible output
Best for
12V battery level monitoring, solar panel voltage logging, car battery voltage checks, 24V power supply monitoring, Arduino battery management systems, and any project measuring DC voltages above 5V on an Arduino ADC.
Why Kunkune
Shipped from UK stock. 60-day returns, no minimum order. Fast Royal Mail delivery.
Buying in bulk? For orders of 10+ units, contact us for trade pricing.
