Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Detection Range	0V - 30V DC
Output Signal	Digital (High/Low)
Interface Type	Standard 3-Pin Header
PCB Dimensions	24mm x 16mm x 4mm
Indicator	Red LED Status Light
Compatibility	Arduino, Raspberry Pi, ESP32
Material	FR-4 Fiberglass PCB
Weight	2.5 grams
Package Contents	1x Voltage Detection Module

6 reviews

Anonymous

Mar 28, 2026

Rating: 5/5

Reliable sensor

I bought five of these for a classroom kit. All of them worked out of the box without any calibration needed. Highly recommended for educational use.

Anonymous

Mar 23, 2026

Rating: 4/5

Good value for money

Solid build quality and easy to integrate. The only reason I didn't give 5 stars is that the documentation could be slightly more detailed for beginners.

Anonymous

Mar 04, 2026

Rating: 4/5

Compact and effective

Small footprint makes it easy to fit into tight enclosures. Works well with 3.3V logic levels which was a requirement for my ESP32 project.

Anonymous

Mar 02, 2026

Rating: 5/5

Fast response time

The digital output switches very quickly when voltage is detected. Ideal for safety cutoff circuits in DIY battery packs.

Anonymous

Mar 02, 2026

Rating: 5/5

Exceeded expectations

Very stable readings even with slight voltage fluctuations. The soldering points are large enough for easy manual wiring if you don't use headers.

Anonymous

Mar 01, 2026

Rating: 5/5

Perfect for my Arduino projects

This module works exactly as described. It detects voltage changes instantly and the LED indicator is very bright. Great for building custom power monitoring systems.

5 FAQ

Q: Can I adjust the sensitivity threshold?

A: This specific model has a fixed threshold determined by the onboard comparator circuit. For adjustable thresholds, please check our potentiometer-based sensor series.

Q: Is a library required for Arduino?

A: No external library is needed. You can read the digital pin state using the standard digitalRead() function in your sketch.

Q: What is the maximum current this sensor can handle?

A: This is a voltage detection module with high impedance input, so it draws negligible current (microamps). It does not switch high loads directly.

Q: Does it come with jumper wires?

A: The package includes the module only. Jumper wires and headers are sold separately, though the module usually comes with pre-soldered pins depending on the batch.

Q: Can this module detect AC voltage?

A: No, this module is designed specifically for DC voltage detection only. Using it with AC sources may damage the component.

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