---
product_id: 137230129
title: "DFRobot Gravity: I2C Digital Wattmeter | Bi-Directional Current Sensor | Voltage Measurement Module | Power Supply Sensor"
brand: "dfrobot"
price: "4061 kr"
currency: ISK
in_stock: true
url: https://www.desertcart.is/products/137230129-dfrobot-gravity-i2c-digital-wattmeter-bi-directional-current-sensor-voltage
store_origin: IS
region: Iceland
---

# 26V max voltage ±0.2% accuracy 8A max current DFRobot Gravity: I2C Digital Wattmeter | Bi-Directional Current Sensor | Voltage Measurement Module | Power Supply Sensor

**Brand:** dfrobot
**Price:** 4061 kr
**Availability:** ✅ In Stock

## Summary

> 🔍 Measure with Confidence: Your Power, Perfectly Monitored!

## Quick Answers

- **What is this?** DFRobot Gravity: I2C Digital Wattmeter | Bi-Directional Current Sensor | Voltage Measurement Module | Power Supply Sensor by dfrobot
- **How much does it cost?** 4061 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/137230129-dfrobot-gravity-i2c-digital-wattmeter-bi-directional-current-sensor-voltage)

## Best For

- dfrobot enthusiasts

## Why This Product

- Trusted dfrobot brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Applications:** Perfect for evaluating power consumption in solar systems, batteries, and motors.
- • **User-Friendly Calibration:** Simple manual calibration process for immediate and reliable usage.
- • **Precision Power Monitoring:** Experience unparalleled accuracy with a maximum relative error of just ±0.2%.
- • **Real-Time Current Tracking:** Monitor bi-directional currents effortlessly, ensuring optimal performance.
- • **High-Resolution Measurements:** Achieve voltage resolution of 4mV and current resolution of 1mA for detailed insights.

## Overview

The Gravity INA219 I2C Digital Wattmeter is a high-precision measurement module designed for monitoring voltage, current, and power in various electronic applications. With capabilities of measuring up to 26V and 8A, it ensures accuracy with a maximum relative error of ±0.2%. Ideal for solar energy systems and battery evaluations, this module features a user-friendly calibration process and real-time current tracking, making it an essential tool for engineers and tech enthusiasts.

## Description

DFRobot Gravity: I2C Digital WattmeterIntroductionGravity: I2C Digital Wattmeter is a high-resolution, high-precision, large-scale measurement module that can measure the voltage, current and power of various electronic modules and electrical equipment within 26V 8A, and the maximum relative error is less than ±0.2% (A simple manual calibration is required before usage). It can be used for power consumption or battery life evaluation of solar energy systems, battery, motors, controller or electronic modules.FeaturesHigh precision, high resolution, large range, low temperature driftBidirectional current high side measurementCompatible with 3.3V/5V controllerSophisticated and compact, easy to embed in the projectApplicationsSolar Power ManagementBattery Fuel GaugeElectronic Module Power EvaluationSpecificationsInput Voltage (VCC) : 3.3V~5.5VVoltage Range (IN+ or IN- relative to GND): 0 ~ 26 VVoltage Resolution: 4 mVVoltage Relative Error: <± 0.2% (Typical)Current Range: 0 ~ ±8A (Bidirectional current)Current Resolution: 1mACurrent Relative Error: <± 0.2% (Typical, manual calibration required)Power Range: 0 ~ 206 WPower Resolution: 20 mW (Hardware) / 4 mW (Software)Quiescent Current: 0.7 mAInterface: Gravity I2C (logic level: 0-3.3V)I2C Address: Four options 0x40, 0x41, 0x44, 0x45Dimension: 30.0mm*22.0mm/1.18*0.87 inWeight: 4gShipping list1 x Gravity: I2C Digital Wattmeter1 x XH2.54-4P Black Header1 x Gravity-4P I2C/UART Sensor Wire

## Features

- Gravity: I2C Digital Wattmeter is a high-resolution, high-precision, large-scale measurement module that can measure the voltage, current and power of various electronic modules and electrical equipment within 26V 8A, and the maximum relative error is no more than ±0.2% (A simple manual calibration is required before usage).
- It can be used for power consumption or battery life evaluation of solar energy systems, battery, motors, controller or electronic modules. You can use this module to measure the power consumption of various electronic modules or the entire project to evaluate battery life.
- The module adopts TI INA219 zero temperature drift current/power monitoring chip and 2W high power low temperature drift 10mΩ alloy sampling resistor. The voltage and current resolution can reach 4mV and 1mA respectively. Under the full scale measurement condition, the maximum relative error of voltage and current measurement can be superior to ±0.2%.
- The module accurately measures bi-directional high-side currents (current flowing through the power supply or battery positive), which is especially useful in solar or battery fuel gauge applications where the battery needs to be charged and discharged. This status can be simply determined by positive or negative current readings. In the motor applications, the current can be monitored in real time by monitoring whether the motor current is too large due to overload.

## Product Details

- **Brand:** DFROBOT
- **Power Source:** Battery Powered
- **Style:** Compact
- **Color:** black
- **Item Weight:** 40.8 Grams

## Images

![DFRobot Gravity: I2C Digital Wattmeter | Bi-Directional Current Sensor | Voltage Measurement Module | Power Supply Sensor - Image 1](https://m.media-amazon.com/images/I/61JECEHdqIL.jpg)

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**Shop now:** [https://www.desertcart.is/products/137230129-dfrobot-gravity-i2c-digital-wattmeter-bi-directional-current-sensor-voltage](https://www.desertcart.is/products/137230129-dfrobot-gravity-i2c-digital-wattmeter-bi-directional-current-sensor-voltage)

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-22*