LCD DISPLAY-- The multimeter has 4 inch 480 x 320 pixels high resolution LCD display. It supports dual line display and trigger input, easy to operate. APPLICATION-- This digit multimeter is ideal for electronic circuit debugging, circuit testing, design and manufacturing, education and training, automotive repair and testing. MULTI-IO INTERFACE-- This Multimeter has multi-IO interface, USB Device / Host, RS232, LAN, and ext. SCPI supported - remote control, and data-sharing possible via LAN, USB, RS232 port. FEATURE-- Resolutions up to 4 1/2 digits. Reading rates up to 150 readings/s. True RMS AC voltage / current measurement. The change trend analysis accessible via special chart mode.