Ucom POS Printer SDK Demo is a sample application for Android devices connecting Ucom POS Printer. Download SDK & Source Code: Printer models supported. Ucom 80mm Thermal Receipt Printer with USB+Serial+Ethernet interface (PO-PU80USE). Ucom 80mm Thermal Receipt Printer with USB+Serial+WiFi interface (PO-PU80WUS). Ucom 58mm Mobile USB+Bluetooth Receipt Printer (PO-PUM02UB).