Description Standard 40PIN GPIO extension header, supports series boards. 4-ch monitoring, via I2C/SMBus interface Onboard 0.1 1% sampling resistor, allows measuring bi-directional current up to 3.2A Embedded 12-bit ADC, supports multiple successive converting, 0~26V voltage measuring range Directly calculate and output measured power value through additional multiply register. I2C control pins for connecting with other host boards Comes with development resources and manual (examples for //STM32) Specifications Operating voltage: 3.3V/5V Control interface: I2C/SMBus Sampling resistor: 0.1 1% Voltage range: 0~26V Current range: 3.2A Resolution: 0.8mA (3.2A range) OR 0.1mA (400mA range) Dimensions: 65mm x 30mm Mounting hole size: 3.0mm colour:blue Material:PCB Package Contents: 1 x Current/Power Monitor HAT 1 x 2x20PIN female pinheader 2 x RPi screws pack Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.