Description
Reviews
| 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 |
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.
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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