Rts1500.7z -

If you downloaded this file from an unofficial forum or a third-party "driver" site, please scan it with a tool like VirusTotal before extracting, as .7z files can be used to deliver executable malware.

Manufacturers like FOIF produce "RTS" (Reflectorless Total Station) series tools. While the RTS102 is common, "1500" may refer to a specific reflectorless range (1500m) or a newer model variant. RTS1500.7z

Firmware or system image files used to update the device's internal operating system. If you downloaded this file from an unofficial

To view the actual content, you will need a file archiver that supports the .7z format. RTS1500.7z

A highly-rated free utility on the Mac App Store .