Fig1. The front of TD-Solar analyzer

(1) LCD screen: Display brief information; (2) USB port: Connect to PC (Windows only); (3) Power indicator: When the device is powered, this LED is on; (4) Working status indicator: When the device is working, this LED is flashing or on; (5) ~ (8) Buttons: Switch mode, start/pause, stop, or show more information

USB Driver Download (For windows)