gtr777FST-SH2000, MHC-GTR888, MHC-GTR777, MHCGTR555, MHC-GTR333 KDB008 MHC-GTR555, GTR777 MHC-GTR888 1 85v 2 85v 3 85v 4 GND 5 GND 6 GND 1 105v 2 105v 3HCD-GTR777, GTR888: E2, E51, AR 4-265-401-0[] Soldering irons using a temperature regulator should be set to HCD-GTR777, GTR888: MX 4-265-401-2[] about 350 °C. Caution: