2 way lighting time lag

[Obiwanharris]

Yes I will try it first and will sure let you know how I get on. Thanks all

 

[JohnW2]

Hi, having bought the switch why don't you use it as John D has suggested and use it to control a table lamp ?

Indeed. In fact, if the OP would like a tidier arrangement, he could use that switch to control a new, additional, 'fixed' light fitting on the ceiling (or wall, or wherever) - totally separate from the present light and switching.

Kind Regards, John

 

[333rocky333]

I do believe Elkay do slave and master versions for two way switching

http://www.screwfix.com/p/elkay-push-button-slave-switch/87054
http://www.screwfix.com/p/elkay-2-wire-master-push-button-white/65811

Bare in mind theres likely no neutral at your switches

 

[JohnW2]

Bare in mind theres likely no neutral at your switches

Indeed - and that's why it's probably a saving grace that the electronic time-lag switch the OP has bought has (I would say unusually) got a battery!

Kind Regards, John

 

[securespark]

2 way witching

Handy at Halloween!

 

[333rocky333]

the electronic time-lag switch the OP has bought has (I would say unusually) got a battery!

Kind Regards, John

We use a lot of cp electronics timers for smoking area heaters, there electronic bits do seem reliable, suggesting to me they do actually seem to know a bit about what there making and selling

 

[Obiwanharris]

thanks I will check out the Elkay ones and also good to know someone has used the cp electronics stuff and found them good. There seems to be a lot of Chinese/dodgy switches for sale with instructions written in broken English being sold and its hard telling whats what! Trusted suppliers I know of like Screwfix etc don't seem to stock these fancy switches.

 

[Echo the husky]

We use a lot of cp electronics timers for smoking area heaters, there electronic bits do seem reliable, suggesting to me they do actually seem to know a bit about what there making and selling

We use CP Electronics a lot, their simple stairway timer switches are very good, we have had only 2 need replacing, in both cases they still worked but had been physically broken after being punched! Their more professional microwave lighting controls are superb, I fitted a load of 2 channel sensors recently in an office, programming took seconds with the £10 remote control. Highly recommended.

 

[Mikefromlondon]

Thanks. The battery makes a big difference (making it functionally more like a pneumatic one).

If I understand the instructions correctly. what they are describing as 2-way switching would probably not be what you want. It would involve replacing both upstairs and downstairs switches with those time-lag switches. You would then be able to initiate a timed period of lights 'on' by pressing either, but I don't think that you could turn off the light from either of those switches during the timed period and nor do I think could you turn the light on 'permanently' (i.e. not timed).

However, again assuming I understand correctly, I think you could probably do as I was suggesting. Assuming you currently have conventional 2-way switching, I think if you kept the two existing switches and connected the lag-switch's 2 terminals to the L1 and L2 (not COM) of one of the existing switches, then it would probably work as I previously suggested - switching on the light for the timed period and then 'off' (provided that the light was switched 'off' by the conventional switches). The two existing switches would then continue to work as normal (except when 'over-ridden' during the timed period after pressing the time-lag switch's button).

I'll be interested to hear what others think about this idea.

Kind Regards, John

Yes that would work as suggested John.

 

[333rocky333]

However, again assuming I understand correctly, I think you could probably do as I was suggesting. Assuming you currently have conventional 2-way switching, I think if you kept the two existing switches and connected the lag-switch's 2 terminals to the L1 and L2 (not COM) of one of the existing switches, then it would probably work as I previously suggested - switching on the light for the timed period and then 'off' (provided that the light was switched 'off' by the conventional switches). The two existing switches would then continue to work as normal (except when 'over-ridden' during the timed period after pressing the time-lag switch's button).

I'll be interested to hear what others think about this idea.

Kind Regards, John

Similar to an Intermediate switch that is connected across the strappers

 

[JohnW2]

Similar to an Intermediate switch that is connected across the strappers

Sort-of. An intermediate switch swaps the connections between the two strappers, whereas what I was talking about was connecting the two strappers together with the additional switch (in it's 'on' state).

An intermediate switch leaves the functionality of the two other switches unaffected - all three switches can turn the light on or off. With the 'connecting the strappers' (via the additional switch) method, when the light is on because of the additional switch, neither of the others can turn it off.

Kind Regards, John