... , and a separate power supply, low-power, 8-bit CMOS data acquisition devices. The PCF8591 has the four analog inputs ... by a through-hole, aperture: 3mm, convenient fixedThree-module interface specification The module on the left and right, respectively, to expand ... , select 0-5V adjustable voltage access circuit Paypal accept PCF8591 module AD / DA conversion modules analog-to-digital / digital-to ...