High Accuracy: The INA219 achieves a maximum error accuracy of 1% over a temperature range of -40C to +85C with a maximum offset of 100 uV. I2C interface: The I2C interface has a timeout setting that not only prevents bus lockout, but also provides high-speed mode for up to 3.4 MHz communication requirements. Advantage: The high precision of the product combines the advantages of 12-bit resolution to help you minimize the pressure on the shunt resistor, thus minimizing power loss and power consumption and saving board space. Function: INA219 not only can monitor the pressure drop on the shunt resistor, sensing shunt power supply voltage, at the same time also can calculate the power.You may refer to this link to conduct the experimenthttps://bit.ly/3Z1EwFe Package includes: You will get 2 x INA219 I2C Interface Bi-directional Current Sensor Module, 1x12Pin Female to Male Dupont Cable.