The DuoMarka is a contemporary and elegant recessed light suitable for illuminating steps and outlining other areas in the garden, mounted in the ground, walls or decking. It is made from high quality, marine grade 316 stainless steel, which has an even greater resistance to pitting corrosion / rusting than other lower grade steel. It has two conical sections on one side of the top of the fitting, which allows a 180º diffusion of light through a clear lens without glare. The slightly domed surface makes this the ideal shape for mounting on decking, a driveway, a patio or any other areas where a walk over facility is required. The front bezel is threaded, and attaches to a steel body by screwing together with no external screws or fixings which results in a neater overall finish. This also means no tools are required to change the MR16 lamp (LED recommended). Any 12v lamp can be used in the versatile ‘DuoMarka’, MR16, MR11 or G4 (LED versions recommended).
The robust black plastic sleeve will be built into the wall during construction or retrofitted into a hole. The main part of the light then pushes into the tube, where it is held firmly in place by internal gripping ‘teeth’ (see detailed image), just showing the streamline front dome.
The robust black plastic sleeve will be built into the wall during construction or retrofitted into a drilled out hole. The main part of the light then pushes into the tube, where it is held firmly in place by internal gripping ‘teeth’ (see detailed image), leaving only the streamline front dome on show.
The DuoMarka is supplied with approx. 3m of 3 core H05RNF cable but is also available in a 1m cable option. We supply this with the 3 metre cable length as standard as this longer cable length gives the option of a 6m space between two lights should it be needed, and could cut down the number of cable joins in outdoor lighting installation. Light can also be spread to a wider area with longer cable length.
The cut out of the installation pot is 87mm diameter x 114 mm depth
The diameter of the body of the fitting is 60mm x 67mm length
LED lamp energy saving comparison
Lamp colour ( Kelvins )
The colour of a lamp is defined as a measurement called kelvins. A standard GLS
light bulb in your house would be 2,700 kelvins which is in the warm colour spectrum
and a lamp with 6,000 kelvins would be at the very cold white spectrum. Getting the
right colour temperature of a lamp does matter as the warm colour wavelength helps
to soften skin tones and gives a warm soft relaxed feel and at the other end of the
scale a 4,000 to 6,000 kelvin lamp colour would be used in offices or a fast food
restaurants to make you feel less comfortable and relaxed and more alert. There’s
nothing that can sour your opinion of a compact fluorescent or LED lamp like buying
a 4000K or 5000K bulb when you meant to buy a 2700K bulb, or vice-versa. When you
buy a new, energy efficient bulb, keep your application and colour scheme in mind
and make sure to buy the bulb with a colour temperature to match.
Lamp colour temperatures in kelvins.
Light output ( Lumen's )
The amount of light that is produced by a lamp is called lumen's and the more lumen's
the lamp has the brighter it will be. Lumen's work in conjunction with kelvins and
watts should not be taken in isolation of each other, for example if you had a very
warm white lamp at 2,700 kelvins and it produced 300 lumen's and you then had another
lamp which was a cool white 6,000 kelvins which also produced 300 lumen's the cooler
lamp colour would always appear brighter to the naked eye than the warmer one this
is due to the receptors in the eye that react better to a white light spectrum. Another
factor on how bright a light may appear is contrast so if you shine a white 6,000
kelvin light on to a dark wall and a warm 2,700 kelvin lamp on to a white wall the
warmer lamp would appear brighter due to the contrast of the material it is focused
on. So when choosing a lamp always take in to account the area you want to illuminate
and think about Kelvins ( colour ), Lumen's ( brightness) and contrast ( colour of
area ) The more lumen's produced per watt the more energy efficient the lamp will
be, for example you can have a 25w candle lamp that produces 170 lumen's or a more
energy efficient 18w candle lamp that produces 180 lumen's so even though the wattage
is smaller the lumen's are greater which makes it use less electricity. That's what
makes LED lights so energy effective as they can produce 700 lumen's from a 5w lamp.
Light intensity or Light levels ( LUX )
Light levels are measured in something called LUX. Put simply LUX is a measurement
of light falling on a given surface area. For example an average LUX of 200 would
be needed for an outdoor tennis court for recreational purposes and a side street
walkway would have an average of 5 LUX. To calculate lux levels you need a very good
calculator or computer as there is a number of factors that need to be taken in to
account.Lux levels can be effected by a beam angle of a lamp, for example if you
had a 50w 38 degree MR16 halogen lamp at 3 mtrs from the floor and another 50w 10
degree MR16 lamp placed next to it, the one with the 10 degree beam angle would record
a higher lux level due to the concentrated light in a small area so you could drop
the 50w lamp to a 35w lamp to save energy and still achieve the desired light level.
A 12v teroidal transformer will be required