INA219 Sensor Development Kit Adafruit INA219 Sensor Development Kit evaluates INA219 current sensors from Texas Instruments. The INA219 current sensors can be used to measure both the high-side voltage and DC current draw over I2C with 1% precision. This sensor can handle high-side current measuring up to 26VDC. The INA219 Sensor Development Kit provides an I2C interface and has dimensions of 51mm x 22.8mm x 3.6mm.