Click on the link below to download or view items:
GT500/GT500DUO User Guide
Full version PDF - note: the GT500DUO houses 2 x GT500 units in one case. The user guide is the same for GT500 and GT500 DUO.
For older versions of the GT500/GT500DUO User Guide, click here
Full version PDF
Free GT500/GT500DUO "Firmware Update Utility" PC Software
The free Microsoft Windows application (not required for operation) is compatible with any version of Windows from WinXP through Win10. The Utility enables fast and reliable upgrading of
the GT500 or GT500DUO firmware when the PC is connected to the charger via its embedded USB interface (no dongles required). With embedded USB support, connecting to a PC for this purpose
has never been easier!
Compatible Parallel Adapters
GT Series Supports the Revolectrix SPA and MPA Safe Parallel Adapters. Look for the MPA Combo in the online stores! For more information about these unique Safe Parallel Adapters, see
"Native XH Adapters" at the above link (bottom of the page).