The Type A+B U5 CW5-Series versatility is enhanced by its universal 120-277V input voltage, high power factor (>0.9), and impressive efficacy of up to 146lm/W. It offers up to 2,350 Lumens with >80 CRI for efficient, high-quality lighting in various settings. Ballast Current (@120V)

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Adjustable Brightness: Tailor the light level to the specific needs of the space. Use lower wattage for tasks requiring less light and higher wattage for brighter environments.

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Offices and Workspaces: Fine-tune brightness and color temperature to promote focus and adjust for individual preferences.

Author: Mark Fedkin, John A. Dutton e-Education Institute, College of Earth and Mineral Sciences, Penn State University.

The DLC Listed 4FT Type A+B | U5-Series LED T8 tubes are energy-efficient, long-lasting replacements for fluorescent tubes. These smarT8s are UL-A and UL-B bypass compatible, offer next-level dual-selectable options, and work in various locations (enclosed, dry, damp) with different wiring configurations (Double-Ended Bypass, shunted/non-shunted). Their durable all-glass PET coating meets NSF Standards for food safety and long life minimizes maintenance and eliminates hazardous materials concerns. All with a 7-Year, 50,000 Warranty.

This lamp offers more control that most T8s in its class with its impressive dual-selectable options. Easily access the two dip-switches including 5-WATTselect (8W | 10W | 12W | 15W | 18W) and 5-CCTselect (27K | 30K | 35K | 40K | 50K) located on each end of the lamp respectively. Even after installation, the dip-switches can be accessed and changed without removing the lamp first.

Retail Stores: Create a warm and inviting atmosphere in customer areas, while using cooler light to highlight products effectively.

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Hospitals and Healthcare Facilities: Select cooler temperatures for task lighting in exam rooms and warmer tones for patient comfort areas.

The John A. Dutton Institute for Teaching and Learning Excellence is the learning design unit of the College of Earth and Mineral Sciences at The Pennsylvania State University.

The working distance (W.D.) is determined by the linear measurement of the objective front lens to the focal plane. In general, the objective working distance decreases as the magnification and numerical aperture both increase.

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Schools and Universities: Provide bright light for classrooms and libraries, with the option to adjust for computer labs or relaxation areas.

The working distance is the distance from the front of the lens to the focal plane. The objectives are designed that this is also where zero OPD occurs. Because of this, the terms W.D., focus, and zero OPD are often used interchangeably.