Classic Acorn ActiveLED® Retrofit for most Acorn Exterior Luminaires

  • ActiveLED® Classic Acorn Retrofit - For most exterior Acorn Luminaires

  • 38 Watt ActiveLED Retrofit engine replaces up to 175 Watt Metal Halide bulb, 350 Watt Incandescent bulb

  • Significant Energy Savings (50-85%) and very low maintenance costs compared to conventional high wattage and inefficient bulbs

  • 21st century retrofit ideal for:
    • walkways
    • parking lots
    • pedestrian areas
    • other public spaces

  • Innovative self-contained ActiveLED light engine designed to retrofit Vintage Acorn Luminaires:
    • Installs in existing Luminaire
    with two screws
    • Complete replacement for
    existing inefficient electronics
    • 3.2 lbs replaces over 10 lbs
    of legacy electronics

  • Improved light quality and illumination uniformity
    • Lumen Lifetime of 90,000
    • 90% Luminous Flux

  • Optional energy management features provide additional energy savings, including:
    • Motion Sensor
    • Daylight Sensor
    • Digital Rotary Dimmer
    • Light Space Manager
    • Battery Backup for
    emergency lighting

    A 36 Watt ActiveLED Acorn Retrofit that is dimmed down to light level 40 when there is no motion sensed consumes just 3.24 Watts (9% of 36 Watts), saving 32.76 Watts, 91%

  • Environmentally Safe Lighting:
    • Zero mercury content
    • Eliminates disposal of
    hazardous materials
    • Facilitates LEED® points

Classic Acorn ActiveLED® Retrofit for most Vintage Acorn exterior Luminaires, up to 38 Watt Retrofit replaces up to 175 Watt Metal Halide electronics

Provides a 21st century lighting solution for "vintage" outdoor acorn-style light fixtures with an energy efficient, high performance LED retrofit in 20, 26 or 38 Watt versions.

The U.S.-manufactured ActiveLED® Classic Acorn Light Retrofit is an innovative, self-contained LED light engine designed to easily replace the inefficient, high-wattage light bulb assembly in almost any existing acorn style fixture, providing energy savings of 50-80 percent.

Many municipalities use acorn style lamplights for roadways, sidewalks and public spaces in historical and residential neighborhoods. Typically, these lights have large acrylic globes and cast aluminum bases that conceal 175-Watt Metal Halide light bulbs needing frequent replacement. The existing lamplight can be retrofitted with the low-wattage ActiveLED light and still have the same “old town” characteristics. The only noticeable difference in its outward appearance is a better quality of light, which helps to improve the safety value of its surroundings. Ringdale’s patented LED technology also ensures a long life span of 90,000 hours (24/7 is 8,760 hours per year), lowering the bottom line when it comes to maintenance and operational costs.

The ActiveLED Classic Acorn Light Retrofit meets many municipalities’ latest sustainability mandates for reducing energy usage. For applications where lower light levels would be appropriate during periods of inactivity, the retrofitted lamplight can be interconnected with Ringdale’s own intelligent controller providing automatic dimming and on/off capabilities.

ActiveLED® Classic Acorn Retrofit Product Overview

Ringdale provides three models of ActiveLED® Classic Acorn Retrofits for different lighting applications, all are available in a choice of CCT colors - 2700K, 3000K, 3500K, 4000K and 5000K:

Product Code



Light Output

Mounting Height


Walk Path

20 watts

~1,820 Lumens

Existing Mount


Pedestrian Area

26 watts

~2,360 Lumens

Existing Mount


Parking Lot

38 watts

~3,460 Lumens

Existing Mount

ActiveLED® Classic Acorn Retrofit Space Requirements

The ActiveLED Acorn Retrofit requires a minimal amount of space in the existing Acorn Luminaire, as follows:

Acorn Retrofit

LEGEND: Measurements in inches, [measurements in mm]

Mounting Ring / Plate (aluminum):

- Overall diameter of 6.50"
- Mounting holes on standard 5.60" mounting pattern
- Overall thickness of 0.091"
- Other size Mounting Ring / Plates available, call for details
Power Supply / Driver Assembly:

- At least 5.61" clearance below the Mounting Ring
- At least 5.61" overall clearance at widest point
- At least 1" all-round clearance
LED Elements / Reflector / Heatsink Assembly:

- At least 9.1" height clearance above the Mounting Ring
- Overall diameter of at least 5.3"
- At least 1" all-round clearance

Removing Existing Acorn Bowl & Electronics Assembly

It is a very straightforward process to remove the existing Acorn "bowl" and electronics assembly in preparation for installing the ActiveLED Acorn Retrofit , please refer to the following diagram for more details.

The existing electronics assembly will need to be disposed of safely and in accordance with local regulations.

Acorn Retrofit

Acorn Luminaire with ActiveLED® Retrofit Technology Installed

The following pictures show a Vintage Acorn Luminaire with its original legacy electronics removed and the ActiveLED Acorn Retrofit installed and fully functional.

Acorn Retrofit

ActiveLED® Technology

Ringdale uses the latest in energy efficient LEDs and LED Modules producing equal or greater light output than current HID technology (Metal Halide and High Pressure Sodium). Our state-of-the-art electronics monitor current and temperature of the LED substrate to assure maximum performance under the prevailing environmental conditions and a Lumen Lifetime of 90,000 hours (90% Luminous Flux).

ActiveLED® Warranties

We provide mechanically robust indoor and outdoor lighting systems; our warranties are 10 years on LED elements , fixtures and drivers / power supplies.

Ringdale is an ISO 9001:2000 company, registered under BSI certificate FM-1880. Ringdale provides products of the highest quality designed and manufactured in Texas, USA and in the United Kingdom.

NOTE: Acorn fixture, acorn glass and pole are not included in the price.

ActiveLED® Acorn Retrofit Part Numbers:

00-27-2700-5520-R, CCT5000K 18/20 Watt
00-27-2700-5526-R, CCT5000K 24/26 Watt
00-27-2700-5540-R, CCT5000K 36/38 Watt

Technical Information

Input Voltage:• Auto-sensing 100..277V AC, 50 / 60 Hz
• Digital Power Source, dedicated circuit strongly recommended
Actual Power:• 20, 26, 38 Watt retrofits, dependent upon model selected, see table for details
• 18, 24 or 36 Watt LEDs
Power Factor and THD:PF: > 0.95.THD: <20%
Listings & TestscUL Listed Driver, suitable for damp locations.
TM21 based on CALIPER ISTM Test to UL1598
CALIPER LM-79 Report, LM-80 info available
CE File, RoHS compliant, IP66 Rated.
Conforms to FCC Part 15.19 Subpart B Class A
Operating Temp:-40..+60° C (-40..+140° F)
Dimensions:14.7" overall height, 5.38" diameter (37.3 x 13.7 cm)
Weight:3.2 lbs (1.5 Kg)
CCT Color Temperatures:Choice of 2700K, 3000K, 3500K, 4000K or 5000K in Accordance with ANSI C78.377A

Caution! All specifications published herein are subject to change without notice. See website for Terms and Conditions of use of the website and the information provided herein. See Ringdale website on for Terms and Condtions of Sale and Service.

+44 (0)844 264 1570