SIEMENS - Fire Alarm MXL Firmware Upgrade IC Chip Kit (3 Chip Assortment)

MPN: 500-691254

Model: MSU-1K

Rev. 10.36

New old stock surplus, Surplus shop stock, with instructions.

These lots have spent years in storage, a few sets were repacked in new envelopes and the exterior labels were transferred over, additionally, a few were opened momentarily for inspection and resealed, however the anti-static packets are still factory sealed and unhandled. Some label styles on the envelopes vary by manufacture date, the contents are identical. (see photos)