CJMCU-3221 INA3221 Triple-way Low/High Side I2C Output Current/Power Monitor Module

The CJMCU-3221 INA3221 module is a multi channel current and power monitoring module designed to measure voltage and current on three independent channels. It uses the INA3221 precision current and power monitor IC which supports both low side and high side current sensing.

This module communicates through an I2C interface which allows easy integration with microcontrollers and development boards. It is commonly used for power management, battery monitoring and energy measurement applications in embedded systems such as Arduino/ESP32/Raspberry Pi projects.

Key Features

• Based on INA3221 triple channel current monitor IC
• Measures voltage and current on three channels
• Supports low side and high side current sensing
• I2C communication interface
• High accuracy current and power monitoring
• Compact module for embedded power monitoring
• Compatible with Arduino/ESP32/Raspberry Pi

Specifications

• Monitor IC = INA3221
• Number Of Channels = 3 channel current monitoring
• Communication Interface = I2C
• Operating Voltage = 3.3V-5V
• Measurement Type = Current voltage and power monitoring
• Application = Power management battery monitoring

Interfaces

• VCC = Power supply input
• GND = Ground connection
• SDA = I2C data communication
• SCL = I2C clock communication
• VIN1+ = Channel 1 voltage sense input
• VIN1- = Channel 1 current sense input
• VIN2+ = Channel 2 voltage sense input
• VIN2- = Channel 2 current sense input
• VIN3+ = Channel 3 voltage sense input
• VIN3- = Channel 3 current sense input