G4 9x5730 SMD COOL WHITE 8~30vDC - #1978
Can be used in both 12v and 24v applications.
Higher lumens version using the new 5730 type LED.
Standard 5050 LED are slowly being phased out in favour of smaller LED like the 5730.
Replaces this glass MR11/G4 bulb in horizontal fittings and applications.
Operating voltage - 10~30vDC (12vDC and properly regulated 24vDC systems)
Diameter - 25mm
Thickness of circuitry - 5mm
Net Weight - 4g
LED used - 9x Samsung 5730 SMD
Lumens output - 300lm
Viewing angle - 120°
Colour - Cool White
Voltage - 10~30 volt DC
Current control - constant current driver
Power Consumption - 3w
AC compatible - YES
Life expectancy - 50,000 hours
What is the difference between Warm White and Cool White?
Warm White has a pleasant incandescent tone to the light whereas Cool White is a plain paper White.
The human eye naturally doesn't see Warm White quite as bright as Cool White.
In real terms of Warm White bulb has about 90% of the lumens efficiency of a Cool White unit.
The bad news ends there for Warm White bulbs.
Over the years we've seen a slow transition towards Warm White mainly due to the fact that Cool White got itself a black eye from the early LEDs going blue tinged.
In short - ladies far prefer Warm White to Cool White.
The men prefer Cool White as it is a slightly brighter work light.