Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage Range	DC 3.3V - 24V
Detection Accuracy	±0.1V
Output Signal	Digital (High/Low)
Adjustable Threshold	Yes, via Potentiometer
Indicator LED	Red (Power), Green (Signal)
Mounting Hole Diameter	3mm
PCB Dimensions	32mm x 14mm
Interface Type	3-Pin PH2.0 Connector
Compatible Platforms	Arduino, Raspberry Pi, ESP32
Package Contents	1x Module, 1x Dupont Cable

6 reviews

Anonymous

Mar 31, 2026

Rating: 4/5

Works well with Arduino

Plug and play with standard Arduino libraries. The only reason for 4 stars instead of 5 is that the mounting holes are slightly tight for M3 screws, but it fits.

Anonymous

Mar 25, 2026

Rating: 5/5

Perfect for my robotics project

This voltage sensor module works exactly as described. The potentiometer makes it very easy to set the trigger point for my battery monitoring system. Highly recommended for beginners.

Anonymous

Mar 22, 2026

Rating: 5/5

Exceeded expectations

For the price, you cannot beat this module. It's stable, accurate, and the build quality feels professional. Will definitely buy more for future projects.

Anonymous

Mar 17, 2026

Rating: 4/5

Good value, clear instructions needed

The hardware quality is solid and the LEDs are bright. I had to look up a tutorial online to understand the wiring perfectly, but once connected, it performed flawlessly.

Anonymous

Mar 06, 2026

Rating: 5/5

Great sensitivity adjustment

The ability to fine-tune the voltage threshold with the onboard screw is a huge plus. It allowed me to create a precise low-battery alarm for my drone.

Anonymous

Mar 04, 2026

Rating: 5/5

Reliable and compact

We bought ten of these for our workshop classes. They are durable enough to handle student use and the detection speed is impressive. No false triggers so far.

5 FAQ

Q: Is a separate power supply required for the module itself?

A: Yes, the module requires a VCC connection (3.3V to 5V typically) to power its internal comparator and LEDs, separate from the voltage line you are measuring.

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.

Q: How do I calibrate the voltage threshold?

A: Use a small Phillips head screwdriver to turn the blue potentiometer on the board while applying your target voltage. Turn it until the signal LED changes state.

Q: Does this come with a cable to connect to a microcontroller?

A: Yes, the package includes one 20cm 3-pin Dupont female-to-female jumper wire compatible with most standard development boards.

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

A: This is a voltage detection module with high input impedance, meaning it draws negligible current (less than 5mA) from the source being measured. It does not switch high currents.

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