User manuals are sorted by product serial number and model codes. The first 4 digits of the serial number represent the manufacture date (YYMM) eg, 2203-XXXX = March 2022 build date.
CURRENT Models: TWB-5-4E, TWB-12-4E, TWB-24-4E, TWB-24NE-4E, TWB-24CP-4E
January 2024 - current (2401 - current)
Models: TWB-12D, TWB-24D, TWB-24D-CP
October 2023 - December 2023 (2310 - 2401)
Models: TWBC-12, TWBC-24
October 2023 - December 2023 (2310 - 2312)
Models: TWBRC-12, TWBRC-24
October 2023 - December 2023 (2310 - 2312)