Specifications Power supply: AC220V 50/60Hz, Max. Power <70W, Standby Power <5W Battery (optional): 24V4.5Ahx2 for AP24 6V Operation Temp.: 5°C~40°C Humidity Range: 10% ~ 85% Printer: Thermal Printer (PP25), Impact (PP24/23) Printing Speed: Thermal Printer:50mm/s (10% ~ -30% dependent on the printing density) Impact Printer: 3 lines / s (4.2x35 mm character) Paper Width: 57 mm for thermal printer, 76mm for Impact printer Display (Optional): Three optional graphic LCD (optional speaker), 65x264(PM), 8x112/640x480(PL)