Switches & Controls

Choose to suit the lamps, and check the lamp maker's guidance. Intelligent dimmers such as the SF2192MW switch between trailing-edge and leading-edge modes, so one plate covers both. The SN2161 is a fixed leading-edge dimmer rated 40-400W incandescent and 3-100W LED, while the GDM200U Grid module and the 8301AB pull cord dimmer use trailing-edge dimming.

Yes, the VFRKW smart Wi-Fi dimmer module needs no neutral. It replaces an existing dimmer module in the offset position and is controlled from a phone or tablet through the SmartKnight or Smartlife apps, or by voice with Amazon Alexa, Google Assistant and SIRI Shortcuts. It supports 2-way or 3-way dimming with retractive switches.

A Grid plate is built from three parts: a mounting frame, clip-in modules and a faceplate. Modules such as the GDM007U key switch clip into the frame from the front, and the GDM020U adds a fan isolator to a Grid plate. The faceplate then covers them; the CUG12 curved edge faceplate holds 12 modules and is used with three CUG2F, sold separately.

It isolates an extractor fan from the supply. Fan isolators such as the CU1100 are 10A triple pole plate switches with laser printed markings, and the GDM020U is a 10A triple pole Grid module with a 1500A short circuit rating. Metal finishes include antique brass on the CS11AB and brushed chrome on the CL11BC.

Inserting the key card switches on the room's power and lighting, and removing it switches them off after a short delay. The CUCARD is rated 32A, has a backlit arrow so it can be found in the dark, and cuts power 20 seconds after the card is withdrawn. It needs a mounting box at least 47mm deep and is certified to EN 60669-1.