Boiler sensor Elco for Thision 9-50 12032864 Elco, replaces 12017178

Thision 9-50, Thision Combi 25S, Thision Compact 25M75H/V, Thision Compact 13-25 B120, Thision Duo 17/25
Manufacturer No.: 12 032 864
(replaces 12 017 178 ))