LightwaveRF LW420WH 2 Gang Dimmer 250W Light Switch White - Master Switch


About this product


  • Fully remote controllable twin dimmer switch
  • Works as part of the LightwaveRF smart home range
  • Control remotely when paired with LightwaveRF WiFi link

Product overview

• Fully remote controllable two gang dimmer switch to replace standard double light switches
• Works as part of the LightwaveRF home automation range
• Control via your smartphone or tablet when you are out of the house or on holiday
• Master switch

How does this light switch work?
The LightwaveRF double gang light switch allows you to replace your standard light switch with LightwaveRF technology. You can control this from one of the handheld remotes from the range or even use your smartphone, tablet or computer to turn the socket on and off. This can prove invaluable for security purposes when you are out of the house to deter burglars.

How easy is the switch to install?
If you have a working knowledge of household electrics you should be able to install the socket yourself. It is installed in the same way, straight into a standard 25mm or 35mm back box, and uses the current household wiring without the need to re-wire your home. If you are unsure about connecting the dimmer switch to the mains, we recommend you consult a qualified electrician.

Please note: To use the app with this product, you will require the optional LightwaveRF Wi-Fi Link A23RX.

Rated 5 out of 5 by from Works a treat Works as described, just remember it needs a 35mm back box which is not normal.
Date published: 2016-09-09
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Product Specifications

Pack Size:




Dimmer Switch


Package Contents:

1 x LightwaeRF LW420WH 2 Gang Dimmer Switch

Power Specifications

Power Supply:


Dimensions & Weight







Can you control the switches separately remotely if it is a 2 gang switch? I have 2 switches in my from room currently controlling each end of the room’s lighting. If I only want one end to come on can this Be done through the app or Alexa?

Asked by: Freddo
Yes, I am pleased to advise this product will do exactly as you require, but the item can't be used via Alexa
Answered by: Dominic
Date published: 2018-01-19

is this a generation 2 switch that can monitor the power useageor are all these lightwaverf generation 1?

Asked by: ben7849
This is a first generation lightwave product.
Answered by: Billy
Date published: 2017-12-09

Does this unit have L1 and L2 to be used for 2way lighting, and if so does the other switch have to be a lightwaverf or can it be a normal switch?

Asked by: John
The LW420 has to be connected to a JSJSLW450 2-Way Dimmer to enable 2 Way Switching, it cannot be connected to a normal light switch, the reason is it uses a signal wire between the switches and the signal wire must not be connected to 240V or it will damage it beyond repair.
Answered by: Rich Trash
Date published: 2017-11-21

Hi, is this compatible with Apple HomeKit?

Asked by: justaskingaquestion
Lightwave are not listed as compatible I'm afraid.
Answered by: Neil G
Date published: 2017-09-27

Does this work with the Amazon dot?

Asked by: Jg111
Yes if you have the Wi-Fi link device. The link can be controlled by Amazon Alexa, you just have to install the lightwave skill through your Alexa app.
Answered by: Barney
Date published: 2017-02-24

Will this work directly from iPhone or do I need any other device to work it

Asked by: Robin
as explained on the listing other hardware is required on order to use an app to adjust the lights. ** Please note: To use the app with this product, you will require the optional LightwaveRF Wi-Fi Link. N55LL or A23RX
Answered by: Les
Date published: 2016-12-12

Do the lights have to be dimmers or can this switch be used for non-dimmable lights?  

Asked by: Worth
You need to make sure you use dimmable bulbs.
Answered by: Les
Date published: 2016-12-10

is this only available in white

Asked by: jon9
To see the range follow the link and tick the box for lightwave on the left.
Answered by: Dominic
Date published: 2016-12-06
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