Mobile TCom (Full version) is a Data Transfer App for downloading and uploading data from the following Topcon, Gowin and 2LS total stations by using Usb-Serial Adapter/Converter: 1. GTS-100 series. 2. GTS-210 series. 3. GTS-220 series. 4. GTS-230 series. 5. GPT-3000 series. 6. GPT-3100 series. 7. Gowin TKS-202. 8. 2LS Cygnus KS-100. Main Feature.