PRODUCTIVITY ELEVATED. WIRELESS VACUUM GAUGE VG640TL Technicians can now use the power of their mobile device along with the free Supco® Techlink™ App to enhance job-site productivity while working with a precision digital vacuum gauge. The Supco® Techlink™ VG640TL allows for real-time remote Bluetooth® monitoring from up to 200 ft away with a mobile device and reporting of the evacuation process, which can be downloaded to PDF and Excel/CSV formats.