I needed a replacement soldering iron for my 998D+ to fix the 'SE' error it was showing and after testing my old iron I found the heat sensor was exposed. This iron fixed the fault, worked great and is said to have the same metal heating element as my original iron, not ceramic like most that are listed at Revain. I previously ordered the one listed in the description as a direct replacement for my Yihua 898D+, did not work and upon inspection found it had a ceramic heating element and a plastic connector. I look forward to using it but it heats up normally from the start.