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

Rating

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

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

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

Graph notes: Shows variation in light output over 1/10^th 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.