DFRobot
Gravity: Analog 20A Current Sensor
The Gravity Analog 20A Current Sensor measures both AC and DC current using the Hall effect, outputting a proportional analog voltage to your microcontroller...
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The Gravity Analog 20A Current Sensor measures both AC and DC current using the Hall effect, outputting a proportional analog voltage to your microcontroller. With high-voltage isolation built into the circuit design and a non-conductive acrylic base plate, it's designed for safe use in automation and power monitoring applications.
The standard Gravity 3-pin interface allows plug-and-play connection to Arduino and other compatible boards via the included analog sensor cable.
Key Features
- AC & DC Measurement – 0 to ±20 A DC or 0 to 17 A RMS AC
- Hall Effect Sensing – Non-contact current measurement
- High-Voltage Isolation – Safe measurement up to 220V AC / 311V DC
- Analog Output – Proportional voltage output via Gravity 3-pin connector
- Safety Features – Non-conductive acrylic base plate to prevent short circuits
- ±3% Accuracy – Suitable for monitoring and automation applications
- Compact – 39 × 22 × 17 mm, 18 g
Specifications
- Power Supply – 5.0V
- DC Current Range – 0 to ±20 A
- AC Current Range – 0 to 17 A (RMS)
- Max Voltage Endurance – 220V AC / 311V DC
- Relative Error – ±3%
- Interface – Gravity PH2.0-3P
- Dimensions – 39 × 22 × 17 mm
- Weight – 18 g
Ideal For
- Power monitoring and energy management
- Automation and control systems
- Battery charge/discharge monitoring
- Arduino-based current measurement projects
Package Contents
- 1× Gravity Analog 20A Current Sensor
- 1× Gravity Analog Sensor Cable
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- RMS
- RMS is a way of describing the effective level of an AC signal, such as an audio output voltage. It helps compare audio output levels more meaningfully than a peak voltage number.
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Brands
Sensors & Input
Supplier page — dfrobot.com
Supplier Description · 646.3 KB · Click any page to view full size
SEN0214 analog 20a current sensor schematics V1.0
Schematic · 55.6 KB · Click any page to view full size
SEN0214 analog 20a current sensor datasheet V1.0
Datasheet · 1023.1 KB · Click any page to view full size
Related Tutorials
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