Second Scale Input Not Applicable. Tare Range To capacity by subtraction. Net Weight 3 lb (1.5 kg). Display Dot matrix LCD with white LED backlight. Communication RS232 (Included); 2nd RS232/RS485/USB (Available as an Accessory); USB (Available as an Accessory); WiFi/Bluetooth (Available as an Accessory); Ethernet (Available as an Accessory).