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READ THIS FIRST:

Check the pack and make sure you have all of 
the parts listed on the front of this booklet. If not, 
contact the outlet where you bought this product.

This transformer must be installed by a 
competent person in accordance with the 
Building Regulations

 making reference to the 

current edition of the IEE Wiring Regulations 
(BS7671). 

As the buyer, installer and/or user of this product 
it is your own responsibility to ensure that this 
transformer is fit for the purpose for which you 
have intended it. Eterna Lighting cannot accept 
any liability for loss, damage or premature failure 
resulting from inappropriate use.

This product is designed and constructed according 
to the principles of the appropriate British Standard 
and is intended for normal domestic service. Use 
of this transformer for any other than its intended 
purpose, may result in a foreshortened working life.

Switch off the mains before commencing 
installation and remove the appropriate circuit fuse.

When working at heights, please use a suitable 
platform. 

Do not overload the transformer; check that the 
total load does not exceed the maximum marked 
on the transformer.

Disconnect the transformer from the electrical 
supply before flash or high voltage testing.

Suitable for indoor use only.

This product is suitable for installation on surfaces 
with normal flammability e.g. wood, plasterboard, 
masonry. It is not suitable for use on highly 
flammable surfaces (e.g. polystyrene, textiles). 

Before making fixing hole(s), check that there are no 
obstructions hidden beneath the mounting surface 
such as pipes or cables.

The chosen location of your new transformer should 
allow for the product to be securely mounted and 
safely connected to the mains supply.

Do not cover the transformer with any insulating 
materials.

Ensure that the transformer will be accessible after 
installation for maintenance or replacement.

Do not attach to surfaces which are damp, freshly 
painted or otherwise electrically conductive (e.g. 
metallic surfaces).

If the location of your new transformer requires 
the provision of a new electrical supply, the supply 
must conform with the requirements of the Building 
Regulations making reference to the current edition 
of the IEE Wiring Regulations (BS7671).

This product is designed for permanent connection 
to fixed wiring: this should be either a suitable 
circuit (protected with a 5 or 6 Amp MCB or fuse) 
or a fused spur (with a 3 Amp fuse) via a fused 
connection unit. We recommend that the supply 
incorporates a switch for ease of operation.

Make connections to the electrical supply in 
accordance with the following code: 
Live - Brown or Red 
Neutral - Blue or Black

This transformer is double insulated, and the 
transformer output is SELV (Safety Extra Low 
Voltage). Do not connect any part to earth.

When making connections, ensure that the 
terminals are tightened securely and that no strands 
of wire protrude. Check that the terminals are 
tightened onto the bared conductors and not onto 
any insulation. Wrap loose terminal blocks well with 
insulating tape.

You are advised at every stage of your installation to 
double-check any electrical connections you have 
made. After you have completed your installation 
there are electrical tests that should be carried out: 
these tests are specified in the Wiring Regulations 
(BS7671) referred to in the Building Regulations.

INSTALLATION:

1)  Choose the location for your new transformer 

giving consideration to each of the points opposite.

2)  Loosen the screw on the front of the case and lift 

off the top.

3) Remove the fixing kit.

4)  Using the rear of the case as a template, mark the 

fixing holes on the mounting surface.

5)  Secure the transformer in place using the fixings 

supplied. If the fixings are not appropriate for your 
installation use suitable alternatives.

6)  Make the connections to your bell and/or bell push 

according to the instructions supplied with them. 
Check the Voltage required by your bell/sounder 
and connect to the terminals as shown in fig.1 
below.

7)  Make the connections to the mains supply as 

detailed above.

8) Replace the front of the case.

9) Restore the power supply and switch on.

REPLACEMENT LAMP TYPE:

Supply Voltage:

 

240V 50Hz

Output Voltage:

 

4V 

50Hz or 

 

 

8V 

50Hz or 

   

12V 50Hz

Maximum Current:

 1A

8V

4V

12V

           DIAGRAMS BELOW SHOW HOW TO CONNECT TO THE CORRECT VOLTAGE

MAINS

MAINS

MAINS

N                L

N                L

N                L

Fig 1

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