Megaman JSJSLW420 User manual
lightwaveRF
Connect Series
Dimmer Switch (2 Gang)
Model No. JSJSLW420
Instruction Manual
www.megamanuk/lightwaverf.com
Get Started
What do I need?
How do I get started?
If the Dimmer has already been installed, refer to
the quick setup guide on the following pages to
get going. If you are planning to install the
Dimmer, please refer to the installation instruc-
tions that follow quick setup. This will guide you
through the installation process.
Help Video
You can scan this QR code with your
smartphone. It will take you to a video that will
help guide you through setup and installation.
To install the Dimmer, you will need to remove
and replace the existing lightswitch. This is
usually straightforward, but you must ensure that
there is a suitably deep housing (backbox) and
understand how to safely turn o the electricity
supply. You will also need suitable electrical
screwdrivers.
IMPORTANT: Please retain these instructions for guidance on how to link
Remote Handsets and other LightwaveRF Controllers. For additional
guidance please visit www.megamanuk.com/lightwaverf
Amber LED.
When illuminated,
Dimmer is o.
‘On’ Button.
Hold to raise light
level.
‘O’ Button.
Hold to lower light
level.
Blue LED. When
illuminated,
Dimmer is on.
Overview
Quick Setup Guide
• Tap either ‘on’ (top) button once to
switch the Dimmer on (Blue LED
indicator will illuminate). Press and hold
the on button to raise the light level.
• Tap either ‘o’ (bottom) button once
to switch the Dimmer o (Amber LED
indicator will illuminate). Press and hold
to lower the light level.
Quick Setup
Manual Dimming
Linking the Dimmer to a
LightwaveRF Controller
1. On either gang press and hold down
both the ‘on’ and ‘o’ buttons until the
blue and amber LEDs flash alternately
then release them. The Dimmer Switch
is now in linking mode.
Quick Setup Guide
Dimming with a LightwaveRF
Controller or Smartphone
• Press the ‘on’ button on the Control-
ler (or smartphone app) once to switch
the Dimmer on (Blue LED indicator will
illuminate). Press and hold the on
button to raise the light level (on the
smartphone app use the slider).
Quick Start Guide
2. Using a LightwaveRF Controller or
smartphone app, press the button
intended to be linked; the blue light on
the Dimmer Switch will flash to
confirm that the remote is now linked.
• Press the ‘o’ button on the Control-
ler to switch the Dimmer o (Amber
LED indicator will illuminate). Press
and hold to lower the light level (on the
smartphone app use the slider).
Quick Setup Guide
NOTE: it is important to install this product in accordance with the following
instructions. Failure to do so may void your warranty.
LightwaveRF is fully legal to install in your own home. However, if in doubt,
always consult a qualified electrician.
Installation
Switched live
(live out)
Screw
Mounting
hole
Live in
2-Way
Switching
Connection
Installation
1. IMPORTANT: Turn o the mains electrical supply.
2. Ensure that the wall (back) box has a minimum depth of 35mm.
3. Remove and disconnect the existing light switch (if applicable). It may be
useful at this point to mark out or take a photograph of the connections to
the existing switch so that the correct wires can easily be transferred to the
new Dimmer. Some existing wiring configurations can be complex so take
care.
4. Gently remove Dimmer faceplate by inserting a screwdriver into the
bottom slot/s and lifting away from the unit as shown.
Installation
5. Connect the wiring as per the wiring diagram on the following page.
Ensure that the terminals are properly tightened and that no bare wire is
visible. Be aware that existing wiring circuits are not always correctly
coloured, and that there may be other wired connections present in the back
box; if in doubt, always seek the advise of a qualified electrician.
NOTE: The Dimmer does NOT require a mains neutral wire to be connected
it only requires ‘live in’ and ‘switched live out’.
7. Screw the Dimmer Switch to the
mounting box and ensure that the
screws are suciently tight to support
the product, but do not over tighten as
this may cause the chassis to bend.
Ensure that the plastic spacer is
correctly aligned and that no wires are
trapped between the Dimmer Switch
and the back of the back box.
6. Any earth wires present must be attached either to the earth terminal
located in the back box or capped with a strip connector. The Dimmers are
double insulated so are not required to be earthed directly.
Installation
Installation
Signal Cable Connection
for use with LightwaveRF
2-Way Dimmer only
(LOW VOLTAGE: Do not
connect to live mains!)
Earth wire connects
to terminal in back
box (can be capped
o instead if no
terminal present)
Live Wire In. This
should be Brown
or Red in Colour.
Switched Live
Wire Out. This
should be
blue or black
in Colour.
The Switched Live may
be marked by brown/red
tape to emphasise that
it is not a neutral wire.
NOTE: Wiring shown for one of two
gangs. Please repeat for other gang.
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