Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Input Voltage Range | AC 0-300V |
| Output Signal | AC 0-5V (Active) |
| Frequency Range | 50Hz / 60Hz |
| Accuracy Class | ±1% |
| Isolation Voltage | 2500V AC |
| Power Supply | DC 5V or 12V |
| Operating Temperature | -20°C to +70°C |
| PCB Dimensions | 45mm x 28mm x 18mm |
| Mounting Type | Screw Terminal / PCB Mount |
| Application | Smart Grid, Energy Monitoring, Industrial Control |
Anonymous
Mar 28, 2026
Rating: 4/5
Good value, clear instructions
Solid build quality and the terminals are robust. I deducted one star because the pinout diagram on the silkscreen is a bit small, but the documentation online cleared it up quickly. Great for DIY projects.
Anonymous
Mar 28, 2026
Rating: 5/5
Reliable isolation
Used this in a prototype for a commercial panel. The galvanic isolation gives me peace of mind when dealing with mains voltage. The signal is stable and noise-free.
Anonymous
Mar 26, 2026
Rating: 5/5
Great for university projects
Bought this for my final year project on smart metering. It was easy to calibrate and the linear output range simplified my code significantly. Highly recommend for students.
Anonymous
Mar 16, 2026
Rating: 5/5
Perfect for my home energy monitor
This module works exactly as described. The active output makes it very easy to interface directly with my microcontroller's ADC without needing extra rectification circuits. Accuracy seems spot on when compared to my multimeter.
Anonymous
Mar 08, 2026
Rating: 5/5
Excellent precision
I tested this against a calibrated reference source and the deviation was negligible. The active output feature saves a lot of board space. Will be ordering more for our next batch of sensors.
Anonymous
Mar 06, 2026
Rating: 4/5
Works well, runs slightly warm
The module performs well under continuous load. I noticed it gets slightly warm after a few hours of operation at max voltage, but nothing concerning. Just ensure you have some airflow in your enclosure.
Q: Can this sensor measure DC voltage?
A: No, this module is designed specifically for Single-Phase AC voltage measurement. It utilizes mutual inductance which does not work with DC signals. Please look for a resistive divider module if you need to measure DC.
Q: What is the maximum input voltage before saturation occurs?
A: The module is rated for up to 300V AC. While it may handle slight surges, we recommend staying within the 0-300V range for accurate linear output. Exceeding 300V may cause signal clipping or damage the unit.
Q: How do I calibrate the output to match my specific mains voltage?
A: Calibration is typically done via software. Measure the actual input voltage with a trusted multimeter, read the ADC value from the module's output, and apply a scaling factor in your code. Some versions include a small trimmer potentiometer for hardware adjustment.
Q: Is the output signal isolated from the high voltage input?
A: Yes, the module provides galvanic isolation between the high-voltage AC input and the low-voltage output side. The isolation rating is 2500V AC, ensuring safety for your control electronics.
Q: Does this module require an external power supply to operate?
A: Yes, this is an active module. It requires an external DC power supply (either 5V or 12V depending on your configuration) to drive the internal circuitry and provide the conditioned AC output signal.
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