The Lightolier RD4R79SCT1W is a versatile 4-inch round LED retrofit downlight designed to upgrade compatible existing recessed lighting housings to energy-efficient LED technology while maintaining the clean appearance of a traditional recessed downlight.
The RD4R79SCT1W delivers approximately 700 lumens while consuming only 9 watts, providing bright, energy-efficient illumination for residential, multifamily and hospitality applications.
The fixture features five field-selectable color temperatures, allowing the installer to choose between 2700K, 3000K, 3500K, 4000K or 5000K. This flexibility allows a single fixture to provide anything from warm residential illumination to crisp daylight-white lighting.
High 90 CRI provides excellent color rendering so furnishings, flooring, countertops, artwork and interior finishes appear natural and accurately colored.
The RD4R79SCT1W operates on 120V and is designed for ELV/TRIAC dimming, allowing light levels to be adjusted when used with a compatible dimmer.
Installation is designed to make upgrading compatible recessed lighting quick and convenient. The trim includes a medium-base E26 socket adapter for installation into compatible incandescent recessed housings with medium-base sockets.
The fixture is IC rated and suitable for wet locations, making it a versatile retrofit solution for kitchens, bathrooms, living areas, bedrooms and other appropriate indoor applications.
KEY FEATURES
• 4-inch round LED retrofit downlight
• 700 lumen light output
• Energy-efficient 9-watt LED operation
• Five field-selectable color temperatures
• 2700K / 3000K / 3500K / 4000K / 5000K
• 90 CRI for excellent color rendering
• 120V operation
• ELV / TRIAC dimmable
• Wide approximately 90° beam angle
• Medium-base E26 socket adapter
• Designed for compatible existing recessed housings
• Diffuse lens for smooth, comfortable illumination
• IC rated
• Suitable for wet locations
• ENERGY STAR certified
• Title 24 / JA8 compliant
• Matte white finish
• Approximately 50,000-hour L70 rated life
• 5-year limited warranty
TECHNICAL SPECIFICATIONS
Brand: Lightolier
Catalog Number: RD4R79SCT1W
Product Type: LED Retrofit Downlight
Shape: Round
Nominal Size: 4 Inch
Lumen Output: 700 Lumens
Wattage: 9 Watts
CCT: Field Selectable – 5CCT
Color Temperatures: 2700K / 3000K / 3500K / 4000K / 5000K
CRI: 90
Voltage: 120V
Frequency: 60Hz
Dimming: ELV / TRIAC
Beam Angle: Approximately 90°
Finish: Matte White
Lens: Diffuse Lens
Light Source: Integrated LED
Socket Connection: Medium Base E26 Adapter
IC Rated: Yes
Location Rating: Wet Location
ENERGY STAR: Certified
Title 24 / JA8: Compliant
Rated Life: Approximately 50,000 Hours L70
Warranty: 5-Year Limited Warranty
UPC: 190096131952
700 LUMEN LED OUTPUT
The RD4R79SCT1W provides approximately 700 lumens while consuming only 9 watts of power.
This makes it an energy-efficient solution for upgrading older recessed incandescent lighting to modern LED technology.
The wide light distribution provides smooth, comfortable general illumination suitable for a variety of residential and hospitality environments.
5 SELECTABLE COLOR TEMPERATURES
The RD4R79SCT1W provides five field-selectable color temperatures:
2700K – Soft / Warm White – Warm, comfortable illumination ideal for bedrooms, living rooms and hospitality applications.
3000K – Warm White – Clean warm illumination commonly used throughout homes, apartments and hotels.
3500K – Neutral White – Balanced illumination suitable for residential and light-commercial interiors.
4000K – Cool / Neutral White – Crisp illumination popular in kitchens, bathrooms and work areas.
5000K – Daylight – Bright daylight-white illumination for applications where a cooler, more energetic appearance is preferred.
The desired color temperature can be selected during installation, allowing one fixture to accommodate a wide range of lighting preferences.
LED RETROFIT DESIGN
The RD4R79SCT1W is specifically designed to make upgrading compatible existing recessed lighting to LED easier.
The retrofit trim includes a medium-base E26 socket adapter, allowing it to connect to compatible incandescent recessed housings equipped with a standard medium-base socket.
The integrated LED design eliminates the need for a separate replacement bulb while providing selectable color temperature, high color rendering and energy-efficient performance.
APPLICATIONS
Ideal for:
• Residential homes
• Apartments and condominiums
• Multifamily properties
• Hotels and hospitality
• Kitchens
• Living rooms
• Bedrooms
• Bathrooms
• Hallways
• Entryways
• Basements
• Remodeling projects
• LED lighting upgrades
• Replacement recessed lighting
• Existing recessed-can retrofit applications
INSTALLATION
The RD4R79SCT1W is designed primarily for retrofitting compatible existing 4-inch recessed housings.
The included medium-base E26 socket adapter connects to compatible existing recessed housings equipped with a standard medium-base lamp socket.
During installation, select the desired 2700K, 3000K, 3500K, 4000K or 5000K color temperature.
The retrofit downlight can then be secured into the compatible recessed housing to provide the appearance and performance of an integrated LED recessed downlight without requiring replacement of the complete recessed housing.
FREQUENTLY ASKED QUESTIONS
What is the RD4R79SCT1W?
It is a 4-inch round LED retrofit downlight designed to upgrade compatible existing recessed housings to energy-efficient LED lighting.
How many lumens does it produce?
The fixture provides approximately 700 lumens.
How many watts does it use?
The RD4R79SCT1W consumes approximately 9 watts.
What color temperatures are available?
Five settings are available: 2700K, 3000K, 3500K, 4000K and 5000K.
Is the color temperature selectable?
Yes. The color temperature is field selectable during installation.
What is the CRI?
The fixture provides 90 CRI for excellent color rendering.
Is the RD4R79SCT1W dimmable?
Yes. It is designed for ELV/TRIAC dimming when used with a compatible 120V dimmer.
What voltage does it operate on?
The fixture operates on 120V.
Does it require a recessed housing?
Yes. This is a retrofit downlight intended for installation into a compatible recessed housing.
Does it use a standard screw-in socket?
The fixture includes a medium-base E26 socket adapter for compatible recessed housings.
What is the beam angle?
The beam angle is approximately 90 degrees, providing broad general illumination.
Is it IC rated?
Yes. The RD4R79SCT1W is IC rated.
Can it be used in wet locations?
Yes. The fixture is rated as suitable for wet locations when installed in accordance with the manufacturer's requirements.
Is it ENERGY STAR certified?
Yes.
Is it Title 24 / JA8 compliant?
Yes.
What is the expected LED life?
The fixture has an approximately 50,000-hour L70 rated life.
What is the UPC?
The UPC is 190096131952.
Who manufactures the RD4R79SCT1W?
The RD4R79SCT1W is manufactured under the Lightolier brand.
