Attributes

Brand	-
Category	Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin	-
Brand	TELESKY
Model Number	ACS712-20A
Current Sensing Range	±20A
Sensitivity	100mV/A
Supply Voltage	5V DC
Output Type	Analog Voltage
Bandwidth	80kHz
Primary Conductor Resistance	1.2mΩ
Operating Temperature	-40°C to 85°C
PCB Dimensions	32mm x 13mm

5 reviews

Anonymous

Apr 01, 2026

Rating: 5/5

Accurate Reading

Very happy with the accuracy compared to my multimeter. Easy to interface with ESP32.

Anonymous

Mar 12, 2026

Rating: 5/5

Fast Delivery

Module arrived quickly and works perfectly for my power monitoring setup. Recommended.

Anonymous

Feb 05, 2026

Rating: 4/5

Good Value

Needs some calibration in the code but works well for the price. Shipping was fast.

Anonymous

Feb 03, 2026

Rating: 3/5

Noisy Output

Had to add a capacitor to smooth out the analog signal. Works better after filtering.

Anonymous

Jan 19, 2026

Rating: 5/5

Great for Arduino Projects

Works exactly as described. Used it to monitor motor current in my robotics project and the readings are stable.

5 FAQ

Q: Can it measure DC current?

A: Yes, the ACS712 measures both AC and DC current effectively within the 20A range.

Q: Does it come with pin headers soldered?

A: Yes, pin headers are included and typically pre-soldered for easy breadboard use.

Q: Is there electrical isolation between the sensor and the circuit?

A: Yes, the Hall effect technology provides 1.2kV isolation between the current path and the signal pins.

Q: What is the zero current output voltage?

A: Typically VCC/2, so approximately 2.5V when no current is flowing through the sensor.

Q: Is this compatible with 3.3V logic microcontrollers?

A: The module operates at 5V. If using with 3.3V logic, ensure the analog input pin is 5V tolerant or use a voltage divider.

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