The Kosnic 12W LED 4 Pin DD Bulb is a retrofit replacement for a 28W CFL equivalent, using 47% less energy and, with a lifespan of 30,000 hours, lasting up to 3 times longer. This LED retrofit is non-dimmable, which may affect your choice if replacing a 4-pin fluorescent bulb. One of the benefits of the Kosnic is its option for plug-in conversion into an emergency light; a special socket and green LED is included for this purpose. The conversion pack is available separately from Lyco.
Installation Videos
If you are looking to replace an electronic ballast or a choke-style ballast with starter, we have 2 installation videos to guide you step by step.
To replace an electronic ballast watch the following video:
To replace a choke-style ballast with starter watch the following video:
Carrying an A+ energy rating, the Kosnic 12W LED 4 Pin DD Bulb emits 1200 lumens of 6500K cool white daylight-coloured light in a 120° flood beam. An excellent luminous efficacy of 100 lumens per watt is recorded together with a peak luminous intensity of 350 candelas.
Other advantages of the Kosnic 12W LED 4 Pin DD Bulb over fluorescent equivalents include instant full-power start, high tolerance of frequent switching, negligible UV or IR output, no mercury content, reliable low-temperature performance (down to -20°C), resistance to shock and vibration.
To achieve maximum energy savings with the Kosnic 12W LED 4 Pin DD Bulb, the control gear of the fitting should be bypassed during installation for direct supply from the mains.
3 Year Guarantee 
Energy Rating: A++