35-46W Selectable Sensor Based Back-lit LED Panel Light (2′ x 4′)



The Sensor Based Back-lit LED Panel Series can be widely used for indoor applications.  Excellent for offices, hallways, multipurpose rooms , office buildings, conference rooms, super markets, stores and many other applications.  Lighting controls meet design lights consortium (DLC) networked lighting control system technical requirements, LLLC, Energy monitoring and high end trim function.

  • Energy efficient: save up to 80% in energy costs
  • High lumen output
  • Mercury-free
  • Instant-on light
  • 50,000 hours at 70% lumen maintenance rated life
  • 5 years manufacturer warranty
  • Compatible with most Lutron and Leviton dimmers
  • 12VDC auxiliary dimming
  • Flicker Free,0-10V dimming



  • Power: 35W/40W/46W
  • Input: AC 120-277V
  • CCT:3500K / 4000K / 5000K
  • Output: 4650 LM / 5200 LM / 5942 LM
  • 15W Emergency lumen:  1725lm
  • Emergency power:  WSD-EMLY15W27-XX


Wattage 35W/40W/46W
Lumen 4650 lm/5200 lm/5942lm
15W Emergency Lumen 1725lm (WSD-EMLY15W27-XX)
Efficacy >130 lm/W
CCT 3500K,4000K,5000K
CRI >80
Input Voltage 120-277VAC
Lighting Angle 113°
LED Type SMD2835
Factory Settings 46W & 4000K
PF >0.98
Driver Efficiency >90%
Protection Level Damp
Life Time >75000 hours
IC Rating Type IC
Warranty 5 year limited

Download Product Cut Sheet

Knowledge Base

What is a troffer panel?

A troffer is a rectangular or square light fixture that typically fits into a modular dropped ceiling grid, often described as “recessed.” Historically, troffer fixtures have been designed to accommodate standard fluorescent lamps like T12 or T8 bulbs. However, now troffer lighting is available in LED.

What is the difference between a troffer and panel?

The primary difference between LED flat panel lights and troffers is that flat panels will seamlessly lay into drop ceilings for a sleek, unobtrusive appearance, while LED troffer fixtures can be installed directly on the ceiling, with a less low-profile aesthetic.

Where are troffer lights used?

Troffers are typically used in commercial applications, but can be used in garages, utility rooms, and basements with dropped ceilings. They distribute light downward, but vary greatly in the spread of the light distribution pattern.

How long do LED flat panels last?

The industry standard for LED lifespan is 100,000 hours, or about 10 years, and most people assume that’s how long their display will last.

Are LED panel lights good?

LED panel lights are some of the most efficient lighting options in the market. They have grown in popularity and are used widely because of their energy-efficiency, and can save more than 80% of energy while producing brighter and softer light than their traditional counterparts.

Are LED panel lights dimmable?

Flat panel dimmable LED lighting systems are just like natural lighting. Dimming gives you control over just how soft and cool you prefer the room to be – making it great for adjusting to performance in classrooms, offices, warehouses and more.

How do LED flat panel lights work?

Current LED flat panel lights are typically designed by using edge-lit backlight theorem, light is transmitted from an LED array to a central area of an edge-lit panel through light guides. Edge-lit LED panels are becoming an extremely popular technology used in indoor lighting fixtures.

How far apart should troffer lights be?

To determine how far apart recessed lighting should be, divide the height of the ceiling by 2 and use that as your light spacing.

Which is better panel light or downlight?

A panel light is good at ambient lighting and can illuminate a room with even, shadowless light. Downlights are easily used as spotlights to create a focal point. Wall-mounted panel lights are ideal for reading light.

What are the benefits of using LED panel lights?

LED light panels will make your business more “green” and eco-friendly. Also, LED lighting is more energy-efficient than fluorescent lighting. Even with greater light quality, LEDs lose less energy and use less electricity. Plus, energy savings correlates to saving money.

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