uxcell PCF8591 AD/DA Converter Module Analog to Digital to Conversion Product Name : PCF8591 AD/DA Converter Module;Working Voltage : 2.5-6V PCB Size : 36 x 23mm/1.4" x 0.92"(L*W);Hole Diameter : 3mm/0.1" Hole Center Distance : 31 x 18mm/1.2" x 0.7"(L*W) Net Weight : 8g Package Content : 1 x PCF8591 AD/DA Converter Module