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🔌General Home Automation => Automating Your House => Troubleshooting Automation Problems => Topic started by: marineau on December 02, 2006, 07:12:37 PM

Title: ms14a and sensitive
Post by: marineau on December 02, 2006, 07:12:37 PM

I installed in bedroom two MS14A near from other. I tape on wall to 5 feets from floor.
I define a first to B2 and a second to B3.

I use a cm15A and AHPro for test !

I noticed that a first is fast than second.
Sometimes one detects certain movements and the other not never.

Why one is more sensitive than the other ?

Can I adjust the sensitivity ?

Title: Re: ms14a and sensitive
Post by: Brian H on December 03, 2006, 06:48:13 AM

B3 may not be a good choice for the second sensor. As the Dusk Dawn address for the B2 sensor is B3.
Dusk/Dawn Address = Sensor Address +1.
I have seen some mods for too much sensitivity but none for not enough.
Another thing that maybe a problem. If both detect motion at the sametime. One may get through to the CM15A and by default after a detect the sensor waits; I believe 10 seconds; before it can again detect a motion. So no more detects will happen until the timeout is over.

Title: Re: ms14a and sensitive
Post by: marineau on December 03, 2006, 08:45:04 AM

Quote from: Brian H on December 03, 2006, 06:48:13 AM

B3 may not be a good choice for the second sensor. As the Dusk Dawn address for the B2 sensor is B3.
Dusk/Dawn Address = Sensor Address +1.

I disabled a Dusk/Dawn function with electrical tape inside.. also I tried with B2 and B11 and a saem problem !!!

Quote from: Brian H

Another thing that maybe a problem. If both detect motion at the sametime. One may get through to the CM15A and by default after a detect the sensor waits; I believe 10 seconds; before it can again detect a motion. So no more detects will happen until the timeout is over.

I tought to hide one after other to hide a face, and verify a delay ... and always first is fast than a second  !
I tried also to use B2 and C2 (B2 with CM15A) and (C2 with TM751)...
Maybe that a second is fail ... I will use this one to another place and buy another !

Title: Re: ms14a and sensitive
Post by: marineau on December 03, 2006, 01:31:32 PM

I found a problem...

A problem is not a sensitive question but a RF range question.
If I install my TM751 near of MS14A, so two MS14A run fine... but otherwise just a first run.

Is it possible to increase RF range on my second Ms14A ?

Title: Re: ms14a and sensitive
Post by: Brian H on December 03, 2006, 02:33:16 PM

I have not seen a mod for a greater RF distance. I am sure if someone had done it they will give the data.
Normally you are sending to the TM751 or the CM15A?

Title: Re: ms14a and sensitive
Post by: marineau on December 03, 2006, 02:44:49 PM

Quote from: Brian H on December 03, 2006, 02:33:16 PM

I have not seen a mod for a greater RF distance. I am sure if someone had done it they will give the data.
Normally you are sending to the TM751 or the CM15A?

On my CM15A I disabled RF receiver (with a switch), so I use TM751 only !
Maybe I want buy another TM751 and will use C House Code !

Title: Re: ms14a and sensitive
Post by: Brian H on December 03, 2006, 07:24:09 PM

Oh yes. Now I remember. You did a complete RF Receiver disable on your CM15A.

Title: Re: ms14a and sensitive
Post by: dave w on December 04, 2006, 12:06:09 PM

Quote from: marineau on December 03, 2006, 01:31:32 PM

I found a problem...

A problem is not a sensitive question but a RF range question.
If I install my TM751 near of MS14A, so two MS14A run fine... but otherwise just a first run.

Is it possible to increase RF range on my second Ms14A ?

Yes, check this thread.
http://www.x10community.com/forums/index.php?topic=10982.msg62760#msg62760

Title: Re: ms14a and sensitive
Post by: Tuicemen on December 04, 2006, 02:19:01 PM

Quote from: marineau on December 03, 2006, 01:31:32 PM

Is it possible to increase RF range on my second Ms14A ?

Yes as dave w pointed you to a post which has references to other posts which contain the Passive Antenna (http://jvde.us/x10/passive.pdf) link!