Function of the card:
Alloy-Memory Thermal Switches
Part number: 370425
Field replacement part number: 370425
Customer Eng reference number: 729806
PCB number: 484157
Used in: IBM 1401
1_2 SMS Cards, p63.
The information on these pages comes from a variety of sources, especially old IBM documents on bitsavers.org, as well as information from the IBM 1401 restoration team, especially Tim Coslet's SMS data and Jim Hunt's data. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.