A
Anonymous
Mar 16, 2026
Rating: 4/5
Decent but noisy
Works as expected but requires filtering in code for stable readings.
Description
ACS712ELCTR-05B/20A/30A Hall Effect Current Sensor Module, 5A/20A/30A Range
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Sensor Technology | Hall-Effect |
| Current Range Options | 5A, 20A, 30A |
| Supply Voltage | 5V DC |
| Sensitivity (5A Version) | 185mV/A |
| Sensitivity (20A Version) | 100mV/A |
| Sensitivity (30A Version) | 66mV/A |
| Output Signal Type | Analog Voltage |
| Bandwidth | 80kHz |
| Operating Temperature | -40°C to 85°C |
| Compatible Platforms | Arduino, Raspberry Pi, ESP32 |
5 reviews
A
Anonymous
Feb 06, 2026
Rating: 5/5
Reliable sensor
Been using these for months in student projects. No failures so far.
A
Anonymous
Jan 30, 2026
Rating: 4/5
Good accuracy
Noise levels are acceptable for hobby use. Requires some calibration in code.
A
Anonymous
Jan 22, 2026
Rating: 5/5
Essential for motor control
Helps us monitor current draw on our robots safely without high-side shunts.
A
Anonymous
Jan 21, 2026
Rating: 5/5
Great for Arduino projects
Works perfectly with my energy monitor setup. Easy to wire and read values.
5 FAQ
Q: Can this measure AC current?
A: Yes, the ACS712 is capable of measuring both AC and DC current.
Q: Is it isolated from the measured circuit?
A: Yes, the Hall-effect technology provides galvanic isolation between the sensor and the current path.
Q: What voltage does the module need?
A: It operates on a standard 5V DC supply voltage.
Q: What is the zero current output voltage?
A: Typically VCC/2, so around 2.5V when no current is flowing.
Q: Can I use this with 3.3V logic microcontrollers?
A: Yes, but ensure the module VCC is powered by 5V for proper sensor operation while reading the analog pin at 3.3V.
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