Keysight Technologies’ headquarters in Santa Rosa has reopened four weeks after devastating fires swept through the region, the company announced Monday.

Keysight’s four main buildings at its Fountaingrove campus remain intact “and the majority of production-related facilities are now in operation,” the company said in a press release. Cleaning and restoration efforts continue in areas that suffered smoke and fire-related damage.

The fire destroyed two large modular office buildings near the front of the campus.

Some Keysight workers are temporarily reporting to sites in Petaluma and at former Hewlett-Packard/Agilent Technologies facilities inside Rohnert Park’s Somo Village.

Keysight noted that business continues as usual at its 145 worldwide locations.

Robert Digitale