Loomi 12C 12W LED Downlight Review

General Information

ID #326
SKU 12C-3K-90W
Series Loomi Tru-Colour
Manufacturer Brightgreen (other LEDs from Brightgreen)
Fitting Type Kit (other Kit LEDs)
Light Type Downlight (PAR)
Height 46mm
Diameter PAR32 (100mm)
Weight 148g
Warranty 1 Years
Test Date 2014-12-12
Review Notes Carries C-Tick and CE approval markings. Kit includes Loomi constant current 'universally dimmable' driver. Mediocre dimming performance tested using a HPM CAT250L leading edge dimmer. Housing is marked "can be abutted and covered [with insulation]" but this does not seem to be consistent with warranty conditions. Warranty requires 20mm of airspace around the unit or warranty is void. Is one of the very few high CRI downlights available and this makes it worthy of consideration. Decent efficiency and price for a high CRI downlight.
Price $33 (AUD) from Da Voluce Lighting on 11th of December 2014


LED Specifications

Claimed Measured Compared To
Watts 12W 11.7W @ 244V
LED Driver Transformer
54.7W @ 12V
Yearly Running Cost[?] $2.63 $2.56 $11.98
Lumens 800 lm 732 lm 765 lm
Efficiency[?] 67 lm/W 63 lm/W 14 lm/W
Lumens/Purchase Price 24 lm/$ 22 lm/$ 170 lm/$
Power Factor[?] N/A 0.87 1
Color [?] Warm White, 3000K Warm White, 2842K Warm White, 3015K
Angle[?] 90° 95° 45°
Dimmable Yes, Leading or Trailing Edge Fair Yes, Trailing Edge
CRI (Color Accuracy)[?] 93 93
Life 35,000 hours Not Measured 6,000 hours
Min/Max Voltage 220V / 240V N/A
Min/Max Temperature N/A / N/A N/A
Measured Temperature 60°C @ 25°C ambient
140°F @ 77°F ambient
256°C @ 25°C ambient
493°F @ 77°F ambient
Flicker Percent[?] 28% 3%
Flicker Index[?] 0.086 0.008


Link to manufacturer specifications at time of testing


Dimming measurements

Graph notes: Dimming performance can be highly dependant on the type of dimmer, the number of lights in the circuit and other factors. Results in your house might vary. Mouse over the graph for more details. Position 10 = Not dimmed. Position 1 = Fully dimmed.



Distribution Graph

Angle: 95° (±47.5° from bottom), Maximum lux:

Graph notes: Shows the intensity of the light when viewed from different angles. Normal omni-directional globes have a fairly constant output all the way around (excepting directly above). Downlights have a narrow range at the bottom in which the light is emmited, this determines their angle.


Spectrum Graph

Representation of color spectrum

Graph notes: Shows the breakdown of the LED light into its component colors. With short wavelength ultraviolet on the left and long wavelength infrared on the right. The green line represents the relative absolute strength of the light at each frequency, while the red line represents what the typical human eye would see. The human eye is most sensitive to green light, but much less sensitive to purples and deep reds.


Flicker Graph

Graph of measured flicker

Percent: 28%, Index: 0.086 (lower is better in both cases)

Graph notes: Shows variation in light output over 1/10th of a second, with relative light output on the Y axis and time on the X Axis. Measured with a photodiode connected to an Oscilloscope. Ideally the yellow line should be flat. Low frequency high amplitude waveforms mean there is a possibility of noticeable flicker, but sensitivity to flicker varies between people. [More details about LED flicker]


LEDs in this Series

Name Price Watts Lumens Efficiency Color Angle Fitting
Loomi 12C 12W LED Downlight $33 (AUD) 11.7W 732lm 67lm/W Warm White, 2842K 95° Kit


Disclaimer: While every effort has been made to ensure the accuracy of these results, each measurement carries an inherent degree of uncertainty and error. Safety and EMC compliance of products to regional or international standards have not been verified unless noted as an ENERGY STAR® LED Lighting Facts, or SSL Quality Scheme certified product. Retailers and importers selling unmarked or unapproved electrical goods can be fined or imprisoned. Mains supplied downlights require installation by a licensed electrician.