Terralux Employee Directory

Appliances, Electrical, and Electronics ManufacturingColorado, United States11-50 Employees

Based in Longmont, Colorado, the company operates under the name Sielo, formerly Terralux. It designs and manufactures LED lighting systems and building-intelligence solutions intended to improve energy efficiency and overall building performance. The core offering includes LEDSENSE, an IoT-based building solution that extends beyond basic lighting controls to address broader efficiency and sustainability needs for occupants.

Sielo serves a range of markets, including multifamily housing, hospitality, education, office environments, municipal facilities, and retail, as well as OEM fixtures and both architectural landscape lighting and accent lighting for retail. The company was founded in Boulder, Colorado, and has operated since 2003, positioning it as a long-standing player in LED lighting and building intelligence. It is a small- to mid-sized business.

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