Merlin / Ricoma Embroidery Machine UTSM PCB Board–Thread Break Sensor–3157621

OEM Embroidery Machine PCB – Thread Break / UTSM Sensor Board. Part No.: 3157621. Function: Thread break / upper thread sensor detection PCB (UTSM). Notes: A faulty UTSM PCB can cause false thread break alarms or failure to stop when thread breaks.