Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano ^^ Onboard ADS1256, 8ch 24bit high-precision ADC (4ch differential input), 30ksps sampling rate ^^ Onboard DAC8552, 2ch 16bit high-precision DAC ^^ Onboard input interface via pinheaders, for connecting analog signal, the pinout is compatible with Waveshare sensor interface standard, easy to connect various analog sensor modules ^^ Onboard input/output interface via screw terminals, for connecting analog/digital signal. Features AD/DA detect circuit, easy for signal demonstration