Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | ZMPT101B |
| Input Voltage Range | AC 0-250V |
| Output Type | Analog Voltage Signal |
| Phase Configuration | Single Phase |
| Operating Frequency | 50Hz / 60Hz |
| Linearity Error | < 0.5% |
| Supply Voltage | DC 5V |
| Isolation Method | Electromagnetic Induction |
| PCB Dimensions | 32mm x 20mm |
| Primary Application | Smart Metering & Energy Monitoring |
Anonymous
Mar 29, 2026
Rating: 4/5
Good value, needs careful calibration
The build quality is solid for the price. You do need a multimeter to calibrate it correctly, but once set, it holds the value well. Just ensure your input voltage stays within the rated limits.
Anonymous
Mar 28, 2026
Rating: 5/5
Reliable isolation
Safety was my main concern, and this transformer provides good galvanic isolation. I've been using it to monitor mains voltage in a prototype enclosure for three weeks without issues.
Anonymous
Mar 27, 2026
Rating: 5/5
Consistent performance
I bought five of these for a batch of sensors. All of them performed consistently after calibration. The linearity is impressive for a module at this price point.
Anonymous
Mar 21, 2026
Rating: 4/5
Compact and effective
Small footprint fits nicely into tight enclosures. The signal is clean, though I added a small capacitor to smooth out minor noise in my specific environment. Overall very satisfied.
Anonymous
Mar 10, 2026
Rating: 5/5
Great for university projects
Used this for my final year electrical engineering project. It interfaced easily with the ADC on my microcontroller. The documentation online is also quite helpful for beginners.
Anonymous
Mar 05, 2026
Rating: 5/5
Perfect for Arduino energy projects
This module works flawlessly with my ESP32 setup. The output is stable and the calibration potentiometer makes it easy to tune for accurate readings. Highly recommended for DIY smart home meters.
Q: Is this compatible with 3.3V logic microcontrollers?
A: Yes, but please note the output swing may exceed 3.3V depending on calibration. We recommend using a voltage divider or an op-amp circuit to scale the output if connecting directly to 3.3V GPIO pins.
Q: Does this come with headers soldered?
A: This module typically ships with unsoldered pin headers to allow for flexible mounting options. You will need to solder them yourself or use jumper wires directly on the pads.
Q: How do I calibrate the output voltage?
A: There is a multi-turn potentiometer on the board. Apply a known accurate AC voltage to the input, measure the output with a multimeter or MCU, and adjust the pot until the reading matches your reference.
Q: Can this module measure DC voltage?
A: No, the ZMPT101B is designed specifically for Single Phase AC voltage measurement only. It will not provide accurate readings for DC sources.
Q: What is the maximum safe input voltage?
A: While the module can technically handle spikes, we recommend keeping the continuous input voltage under 250V AC to ensure longevity and safety. Always use appropriate fuses in your circuit.
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