Bill J pretended :
Can you help? I want to get some PIR sensors to wire into the
light switch in each room in my house.

So when I go from one room to another the lights will switch
themselves on and off depending where I am.

Where can I get low cost PIRs which will switch mains?

Also, I'd like to locate some cheap PIRs which will switch low
power 9 volt equipment.

Thank you for any info.

Separate PIR's do tend to be very expensive when compared to equipment
which includes a PIR. For example - for seven or eight pound you can
buy a 500w flood light which includes a PIR, but the PIR alone might
cost £20 -£30.

Take a look on the TLC web site for the indoor PIR's.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

"Harry Bloomfield" wrote in message
k...
Bill J pretended :
Can you help? I want to get some PIR sensors to wire into the
light switch in each room in my house.

So when I go from one room to another the lights will switch
themselves on and off depending where I am.

Where can I get low cost PIRs which will switch mains?

Also, I'd like to locate some cheap PIRs which will switch low
power 9 volt equipment.

Thank you for any info.

Separate PIR's do tend to be very expensive when compared to
equipment
which includes a PIR. For example - for seven or eight pound you can
buy a 500w flood light which includes a PIR, but the PIR alone might
cost £20 -£30.

Take a look on the TLC web site for the indoor PIR's.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

The PIR part of the Screwfix 500w cheap light is easily removeable and
useable separately.

AWEM

Harry Bloomfield wrote:
Bill J pretended :
Can you help? I want to get some PIR sensors to wire into the light
switch in each room in my house.

So when I go from one room to another the lights will switch
themselves on and off depending where I am.

Where can I get low cost PIRs which will switch mains?
Also, I'd like to locate some cheap PIRs which will switch low power 9
volt equipment.

Thank you for any info.

Separate PIR's do tend to be very expensive when compared to equipment
which includes a PIR. For example - for seven or eight pound you can buy
a 500w flood light which includes a PIR, but the PIR alone might cost
£20 -£30.

Take a look on the TLC web site for the indoor PIR's.


PIRs aren't a great idea for rooms anyway because they switch off after
a few minutes and you have to jump up and down to switch them back on again.

My brother used them in the stairwell and corridors of a flat/extension
he developed and they work well enough there - but for a room you really
would do better with a proper switch.

On Wed, 29 Apr 2009 20:53:40 +0100, Harry Bloomfield wrote:

Separate PIR's do tend to be very expensive when compared to equipment
which includes a PIR. For example - for seven or eight pound you can buy
a 500w flood light which includes a PIR, but the PIR alone might cost
£20 -£30.

I've got as many PIR-less halogens as I can shake a big stick at now,
having bought them to use their PIRs elsewhere. Mind you they're handy as
worklights in the winter when the heat they chuck out is appreciated :-)

--
John Stumbles -- http://yaph.co.uk

Thesaurus: extinct reptile noted for its wide vocabulary.

On 30 Apr, 00:45, OG wrote:

PIRs aren't a great idea for rooms anyway because they switch off after
a few minutes and you have to jump up and down to switch them back on again.

Modern room occupancy PIRs are a _lot_ better for this (ceiling mount
domes, 20 quid from TLC / Toolstation).

Recycled outdoor halogen sensors or 10-15 year old indoors PIRs
(anyone else get those cheapish ones from Greenweld years ago?) are an
absolute pain in the arse. If you sit down on the sofa in a friend of
mine's lounge you're doing Nazi salutes every few minutes to keep the
lights on.

On Mon, 4 May 2009 07:21:52 -0700 (PDT), Andy Dingley wrote:

On 30 Apr, 00:45, OG wrote:

PIRs aren't a great idea for rooms anyway because they switch off after
a few minutes and you have to jump up and down to switch them back on again.

Modern room occupancy PIRs are a _lot_ better for this (ceiling mount
domes, 20 quid from TLC / Toolstation).

Recycled outdoor halogen sensors or 10-15 year old indoors PIRs
(anyone else get those cheapish ones from Greenweld years ago?) are an
absolute pain in the arse. If you sit down on the sofa in a friend of
mine's lounge you're doing Nazi salutes every few minutes to keep the
lights on.

We had one in the Gents at work about 25 years ago and that went off at
awkward moments.
Some one did a cartoon of a man being carried out of the bog on a
stretcher, with the caption: 'He shook it so hard trying to keep the lights
on he ruptured himself'.
--
Peter.
You don't understand Newton's Third Law of Motion?
It's not rocket science, you know.