Question 1

ok Im confused .  I asked does this item come with the transformer included and have had both yes and no answers ! Can someone please clarify ?!

Accepted Answer

I purchased this February 2020 so can only speak to that. There was a LED transformer supplied which has a connector block for mains. Out of the other end is the cable to the light fitting. This unit is about 3 inches by 1 inch and has fixing lugs to secure it. Hope this helps.

Question 2

What type of replacement led bulb is required for this product

Accepted Answer

I found the  bulb that came with the unit had a  poor light output,. I substituted it with a super LED MR 16  5.5 watt warm white.  It must use an LED bulb for the transformer  - in any case a halogen bulb would be too hot. I found all low voltage LEDs do not have the same colour as a halogen and the one I used has a slightly cool light. I have replaced my GU10 halogen bulbs in the house with megaman LED which are almost identical to halogen and I see they now have a MR16 12v LED warm white - but at £20!  The unit fitted perfectly in the overhead extractor grill to the shower but you need a nearby power source to connect the LED transformer. It looks very good  and has provided light in the shower. Hope this is of some help.

Question 3

Do I need to use transformer if I have inverter charger on narrowboat?

Accepted Answer

Not an electrician but I beleive (1) In UK bathrooms you need to be 12V and with the transformer located away from the exposed lamp installation, and (2) that transformers used for LED lights (aka LED drivers) are designed to be consistent at lower voltage/current (eg 700ma @ 3-9V). Re-using 12V transformers installed for halogen bulb levels of consumption is why so many people report flickering or not working in MR16 bulb reviews. When choosing an LED driver you have "constant voltage" (typically LED strips) and "constant current" (more powerful like up/downlights). Search "constant current LED driver" on amazon for plenty of examples of 240V AC input for a 12V LED bulb. For DC input then web searching "RS 176-6768" gives a DC input constant-current LED driver (that example supports a typical MR16 bulb off a 12V supply). If its not a bathroom then you might be ok running a GU10 bulb installation direct off 240V but you would find more options searching for extactor ducts for other rooms than bathroom (due to the 12V bathroom requirement). You'll need to check what regulations apply in your case and whether its better to provide from your DC source or inverter. Hope this is helpful.

Question 4

Will you be kind to let me know if the  4"5"6" inches is to do with the o.d of the  Bezel ? Many thanks

Accepted Answer

I purchased this over a year ago so this is from memory. 
I purchased the 4” which is 100mm and works with the 100mm circular trunking that takes the air out via fan to external vent. So the 4” or 5” or 6” is nothing to do with outside diameter, it is the diameter of the trunking it needs to fit. There are instructions for the hole needed to be drilled in the ceiling to take the unit. I hope this helps you.

ASIN	B00E3R0RJK
Best Sellers Rank	60,173 in DIY & Tools ( See Top 100 in DIY & Tools ) 115 in Bathroom Fans
Brand Name	Swiftair
Bulb Base	E12
Color Temperature	5500 Kelvin
Colour	White/Chrome
Connectivity Protocol	Wired
Control Method	Touch
Controller Type	Push Button
Customer Reviews	4.3 4.3 out of 5 stars (275)
Efficiency	B
Finish	Polished
Fixture Type	Non Removable
Included Components	LED Light
Indoor Outdoor Usage	Indoor
Installation Type	Ceiling
Is Assembly Required?	No
Light Color	Cool White
Light Fixture Form	Spotlight
Light Fixture Installation Location	ceiling
Light Source	LED
Lighting Method	LED
Luminous Flux	109.5 lumen
Manufacturer	Swiftair
Material	Plastic
Model Name	SL
Model Number	SL
Mounting Type	Ceiling Mount
Number of Lights	1
Other Special Features of the Product	Suitable for bathroom zones 1 & 2
Power and Plug Description	Corded Electric
Room Type	Bathroom
Set Name	Size and Color
Shade Colour	White
Shade Material	Plastic
Size	4"
Specific Uses	Showers
Style	Modern
Switch Type	Touch
Theme	bathroom lighting
Unit Count	1.0 count
Voltage	12 Volts
Water Resistance Level	Water Resistant
Wattage	3 watts

Swiftair 4" 5" 6" Shower Light Chrome & White 12v Transformer Bathroom Zone 1 & 2 Ventilation (4" 100mm, White/Chrome)

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