
TERRALUX DLSQ8 Product Specification – Subject to change without notice
8 inch Square Down Light LED
Fixture and Retrofit Kit
The TERRALUX TLF-DLSQS8 is a comfortable and efficient alternative to traditional CFL down light
fixtures. With a profile not taller than CFL down light fixtures, easy to install, this fixture combines
the light distribution and output of a 2x42W CFL fixture with only 36W.
TERRALUX also proposes it as a retrofit kit that make it easy to upgrade most 8 inch square down
light fixtures.
• Fits existing 8x8 inch square recessed down light can fixtures with horizontal CFL lamps
• Correlated Color Temperature (CCT): 4000K (contact TERRALUX for other options)
• Color Rendering Index (CRI): 83
• Efficacy: 76 lm/W
• Nominal wattage: 35W
• Light output out of fixture: 2660 lm (incl. diffuser losses)
• Input voltage: 120V / 277V
• Quick connector for easy installation
• Patented LEDSense® Thermal Management
• Diffuse optic that ensures smooth and comfortable light distribution
• UL 1598 listed (fixture) and 1598C Classified (LED Retrofit Kit)
• ENERGY STAR®
• Lumen Maintenance: L70 > 60,000 hours
• FCC Class A Compliant

TERRALUX DLSQ8 Product Specification – Subject to change without notice
1. Light engine equipped with diffuser
• Light engine performance does not include fixture losses.
• Typical Performance @ 25°C. See Relative Light Output vs Temperature and LEDSense® graphs, page 3, for temperature & Power de-rating.
• All specifications subject to tolerance of ± 10%
• Based on measurement by third party per IESNA-LM79-08
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TERRALUX DLSQ8 Product Specification – Subject to change without notice
LEDSense® Operation, Thermal De-rating and Lumen
The DLSQ8 employs TERRALUX’s patented LEDSense® Thermal Management Technology to
automatically provide maximum light output in various fixtures and operating conditions while
assuring long-term lumen maintenance. LED-Sense® regularly measures the operating temperature
and ensures compliance with a pre-programmed temperature and drive-current profile. This profile
is based on the LED manufacturer’s LM-80 data report and minimum L70@60,000 hour lumen
maintenance curves. LEDSense® is always active, and will compensate for variation in thermal
conditions due to heatsinking, ambient air, Engine positioning, or any other variable that affects the
operating temperature. The Thermal De-rating curve below identifies the relative light output that
can be expected under various thermal conditions. The LEDSense® Power Curve identifies the
reduction in input power over temperature.

TERRALUX DLSQ8 Product Specification – Subject to change without notice

TERRALUX DLSQ8 Product Specification – Subject to change without notice
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TERRALUX DLSQ8 Product Specification – Subject to change without notice
Product Selection & Part Number Guide
Wiring Diagram / Battery Back Up
With Battery Back Up Option
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