Features: Standard for 40PIN GPIO extension header, supports for series boards, NanoOnboard ADS1256, 8ch 24bit high-precision ADC (4ch differential input), 30ksps sampling rateOnboard DAC8552, 2ch 16bit high-precision DACOnboard input interface via pinheaders, for connecting analog signal.Onboard input/output interface via screw terminals, for connecting analog/digital signalFeatures AD/DA detect circuit, easy for signal demonstrationfor GPIO interface: for connecting with for PiAD/DA input/output: screw terminalsAD input: pinheaders, the pinout is compatible with for sensor interface standard, easy to connect various analog sensor modules7.68M crystalLM285-2.5: provides reference voltage for the ADC chipPhoto resistorLED output indicator10K potentiometerDAC8552: 16bit high-precision DAC, 2chPower indicatorADS1256: 24bit high-precision ADC, 8ch (4ch differential input)ADC testing jumperDAC testing jumperPower selection jumperADC reference ground configuration : when AD single inputted, the AINCOM is reference terminal, can be connected to GND or external reference voltageMaterial: plasticcolour: bluePackage Contents: 1 x Digital Analog ModuleOnly the above package content, other products are not included.Note: Light reflection 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.