Elkay 400A Pneumatic Time Delay Switch (68088)

£ 18.49INC VAT

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Elkay 400A Pneumatic Time Delay Switch (68088)

Adjustable pneumatic time delay switch saves energy by ensuring lighting is not left on. Replaces existing single gang wall switch. No neutral required, adjustable from 5 seconds to 5 minutes for LED fluorescent and incandescent lighting.

  • 5 to 300 Seconds
  • No IP Rating
  • Without Override Facility
  • 2-Wire Installation
  • For Fluorescent & Incandescent Lighting
  • Replaces Existing Single Gang Wall Switch
  • Automatically Turns Off Lighting After a Set Period of Time

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View all: Elkay Timers & Controllers

£18.49INC VAT

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Rated 4 out of 5 by from Light switch timer I needed a replacement for my timer in the garage that had jammed after many years use. This was the only offering from Screwfix but fitted the bill. Easy to install but the timer timing screw was fiddly giving no indication of the set time other than 10 sec to 2 hours! Took several attempts to set it for 10 mins. Opportunity for improvement here and a bit pricey for what it does.
Date published: 2021-06-09
Rated 4 out of 5 by from Excellent and does better than Easy to fit (ten minutes including disabling the supply) This one actually allowed me to set 20 minutes on although the packaging suggested only 5 minutes
Date published: 2021-05-17
Rated 5 out of 5 by from Timer switch Excellent product good price, easy to install and well made
Date published: 2021-02-20
Rated 3 out of 5 by from Mmmmmm Seems fairly easy to install can't comment on reliability. Exposed terminals for connection I would think is an issue very easy to short out with a live terminal when taking the switch off or on.
Date published: 2020-09-03
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Weight 105KGs?

Can you advise on good wall braces to hold this as 105KGs is pretty hefty for a switch !.
Asked by: Davidtheteadrinker
Thank you David Clearly an error as Product weight is 105 grams Packaged weight is 138 grams. No need to buy that bracket now unless you are hanging a 100 inch TV this weekend ;-) Regards Elkay
Answered by: Anonymous
Date published: 2020-12-31

what is the IP rating of this switch?

Asked by: grumpy234
There is no IP rating for this switch because it is an indoor switch only and has the same minimal rating as expected with any standard 1 gang 1 way switch normally found within any home or office. We do have a splash/dirt cover for the button (part number 163) but this only gives minor protection. The 163 is unavailable at Screwfix.
Answered by: Anonymous
Date published: 2020-10-26

Can this switch be used for LED lighting

Asked by: Wozz
Thank you for your question. Yes this product, the Elkay Columbus Pneumatic Time Delay Switch and all of ABB Elkays products are suitable for use with LED loads.
Answered by: Anonymous
Date published: 2020-10-26

Use in a toilet

Would this be OK for use in a toilet? Currently the switch is outside the room which isn't ideal. The room has a toilet and a small sink over 1m away from the switch proposed location & it operates light & a fan on a timer.
Asked by: NorfolknGood1
We would not normally recommend a switch that you would touch within a toilet due to hygiene issues. The norm today is to select PIR products so there is no contact with the switch.
Answered by: Anonymous
Date published: 2019-11-09

Can you use this switch in a intermediate light circuit in the staircase

Asked by: Arlind
Hi Arlind, With our products we do not need to use intermediates as they refer to normal manual on/off switches. With a time switch you only ever switch the switch on and it turns itself off. So the answer is Yes you can use our switches in those circuits but you only use 2 wires and wire in parallel to the COM and N/O terminals. The strapper becomes redundant as the end user never needs to switch the switches off.
Answered by: Anonymous
Date published: 2020-09-29
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Adjustable Delay Time Range 5 to 300 Seconds
Brand Elkay
Fixings Supplied Fixings Supplied
Indoor/Outdoor Usage Indoor
IP Rating No IP Rating
Manufacturer Guarantee 1 Year Guarantee
Model No 400A
No. of Earth Terminals 0
Number of Gangs 1 Gang
Pack Size 1
Parent Colour White
Pieces in Pack/Case 1
Power Output (Watts/Kw) - W
Power Voltage Supply 240 V
Product Depth 85 mm
Product Height 85 mm
Product Length 42 mm
Product Thickness 42 mm
Product Type Time Delay Switch
Product Width 85 mm
Switches & Sockets Finish Gloss
Switches & Sockets Profile Type Raised Rounded
Switch Operation Pneumatic
Terminal Capacity Terminals accept up to 2.5mm² cable

Product contents

Pneumatic timer, fixing screws and concealing caps.


Instruction Manual