Anyone got any ?
Any good compared to PIRs?
Any ones to go for/avoid?
TIA
--
Jim K


----Android NewsGroup Reader----
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Most sensors, infra red, microwave and ultrasonic seem to trigger for no
apparent reason. I've tried them all back in the past.
Maybe the tech is better now, but these things that detect movement all
have their drawbacks.
Brian

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"Jim K" wrote in message
o.uk...
Anyone got any ?
Any good compared to PIRs?
Any ones to go for/avoid?
TIA
--
Jim K


----Android NewsGroup Reader----
http://usenet.sinaapp.com/

On Thursday, 25 October 2018 07:13:49 UTC+1, JimK wrote:
Anyone got any ?
Any good compared to PIRs?

I have a ceiling-mounted one in our utility room to turn on the lights. It replaced a PIR one which was always being false-triggered by stuff happening outside the nearby window.

The microwave one isn't triggered by anything outside, but is triggered by us walking above it in the room upstairs!

Overall though, it seems much more predictable than the PIR. I'm happy with it.

Brian Gaff wrote

Most sensors, infra red, microwave and ultrasonic seem to trigger for no
apparent reason.

My Hues don’t.

I've tried them all back in the past.

You clearly havent used the Hues.

Maybe the tech is better now,

No maybe about it.

but these things that detect movement all have their drawbacks.

Yes, but not major ones. My neighbour has them and now
that they have been setup properly, the only false alarm has
been after they had a celebration for the kids that used helium
balloons and eventually the ones that ended up at the ceiling
ran out of helium and fell down, triggering the alarm system

"Jim K" wrote in message
o.uk...
Anyone got any ?
Any good compared to PIRs?
Any ones to go for/avoid?
TIA
--
Jim K


----Android NewsGroup Reader----
http://usenet.sinaapp.com/

Jim K Wrote in message:
Anyone got any ?
Any good compared to PIRs?
Any ones to go for/avoid?
TIA

I should clarify - I'm thinking of external lighting use...
--
Jim K


----Android NewsGroup Reader----
http://usenet.sinaapp.com/

On Thu, 25 Oct 2018 19:19:25 +1100, cantankerous trolling senile geezer Rot
Speed blabbered, again:


Most sensors, infra red, microwave and ultrasonic seem to trigger for no
apparent reason.

My Hues don¢t.

Of COURSE not, Mr Auto-contradictor!

FLUSH the rest of your usual auto-contradicting senile bull**** unread
again

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"Auto-contradictor Rod is back! (in the KF)"
MID:

On 25/10/2018 09:11, David wrote:
On Thursday, 25 October 2018 07:13:49 UTC+1, JimK wrote:
Anyone got any ? Any good compared to PIRs?

I have a ceiling-mounted one in our utility room to turn on the
lights. It replaced a PIR one which was always being false-triggered
by stuff happening outside the nearby window.

PIR shouldn't trigger through a glass window. Glass is all but opaque in
the thermal IR band. Wood and plastic frames may pass enough though.

The microwave one isn't triggered by anything outside, but is
triggered by us walking above it in the room upstairs!

Overall though, it seems much more predictable than the PIR. I'm
happy with it.

PIR doesn't get on with having the sun on it.

--
Regards,
Martin Brown

Martin Brown Wrote in message:
On 25/10/2018 09:11, David wrote:
On Thursday, 25 October 2018 07:13:49 UTC+1, JimK wrote:
Anyone got any ? Any good compared to PIRs?

I have a ceiling-mounted one in our utility room to turn on the
lights. It replaced a PIR one which was always being false-triggered
by stuff happening outside the nearby window.

PIR shouldn't trigger through a glass window. Glass is all but opaque in
the thermal IR band. Wood and plastic frames may pass enough though.

The microwave one isn't triggered by anything outside, but is
triggered by us walking above it in the room upstairs!

Overall though, it seems much more predictable than the PIR. I'm
happy with it.

PIR doesn't get on with having the sun on it.


Or movement towards it rather than across it... hence the question....
--
Jim K


----Android NewsGroup Reader----
http://usenet.sinaapp.com/

In article ,
Martin Brown wrote:
On 25/10/2018 09:11, David wrote:
On Thursday, 25 October 2018 07:13:49 UTC+1, JimK wrote:
Anyone got any ? Any good compared to PIRs?

I have a ceiling-mounted one in our utility room to turn on the
lights. It replaced a PIR one which was always being false-triggered
by stuff happening outside the nearby window.

PIR shouldn't trigger through a glass window.


But they do since they also tend to sense motion

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

On 25/10/2018 13:27, charles wrote:
In article ,
Martin Brown wrote:
On 25/10/2018 09:11, David wrote:
On Thursday, 25 October 2018 07:13:49 UTC+1, JimK wrote:
Anyone got any ? Any good compared to PIRs?

I have a ceiling-mounted one in our utility room to turn on the
lights. It replaced a PIR one which was always being false-triggered
by stuff happening outside the nearby window.

PIR shouldn't trigger through a glass window.


But they do since they also tend to sense motion


None of my PIRs work through glazing.
The IR doesn't get through for them to detect motion.

You might have other things triggering them.

In article ,
dennis@home wrote:
On 25/10/2018 13:27, charles wrote:
In article ,
Martin Brown wrote:
On 25/10/2018 09:11, David wrote:
On Thursday, 25 October 2018 07:13:49 UTC+1, JimK wrote:
Anyone got any ? Any good compared to PIRs?

I have a ceiling-mounted one in our utility room to turn on the
lights. It replaced a PIR one which was always being false-triggered
by stuff happening outside the nearby window.

PIR shouldn't trigger through a glass window.


But they do since they also tend to sense motion


None of my PIRs work through glazing.
The IR doesn't get through for them to detect motion.

You might have other things triggering them.

waving tree branches.

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle