Features: 1.This product is suitable for Raspberry Pi current and power monitor, can monitor the current, voltage, power, voltage across the sampling resistor through the I2C/SMBus interface 2.Based on for Raspberry Pi 40pin GPIO interface, suitable for Raspberry Pi series motherboards 3.The product support 4-channel detection, communication via I2C/SMBus interface 4.Onboard 0.1 ohm 1% sampling resistor, can measure bidirectional current, measuring current up to 3.2A 5.Built?in 12?bit ADC, can set continuous multiple conversion, the measurement voltage range supports 0~26V 6.The output measurement power can be directly calculated through the additional multiplication register 7.Leads out the I2C control interface for easy access to other main control boards specification:Item Type: Sense HAT for Raspberry Pi Working Voltage: 3.3V/5V Control Interface: I2C/SMBus Sampling Resistance: 0.1 ohm 1% Voltage Range: 0~26V Current Range: 3.2A Resolution: 0.8mA (range 3.2A) or 0.1mA (range 400mA) Through Hole Diameter: Approx. 3.0mm / 0.1in PackageList: 1 x Sense HAT for Raspberry Pi 1 x Pin Header 3 x Screw 3 x Nut 2 x Connection Column