Re: Chamerlain Garage Door Monitor

["Jack Ak" <akjack@xxxxxxxxxx>]

"Dave Houston" <nobody@xxxxxxxxxxxx> wrote in message news:456b6e04.720696390@xxxxxxxxxxxxxxxx
> nobody@xxxxxxxxxxxx (Dave Houston) wrote:
>
> >http://www.chamberlain-diy.com/diy04/products/buy_online_convenience_safety/0,1341,uid-d3N7bGFhY2diaA==_1136,00.html
> >
> >If anyone has one of these I'd like to get the FCC ID number which should be
> >on the sensor unit that mounts on the door. I'd like to know what RF
> >frequency they use. The prices are reasonable - Smarthome has them for a bit
> >less than Chamberlain's online store.
> >
> >Also, what is the range? The discontinued Stanley garage door monitor (which
> >was very similar in design) had really poor RF range. The Stanley system
> >showed the status of up to three sensors. Chamberlain supports up to four
> >sensors but it looks like they do not show individual sensor status.
>
> To answer my own question (and fix my spelling error), the Chamberlain
> garage door sensors use 312MHz and have a tuning capacitor so I'm sure they
> can be tuned to 310MHz.
>
> I still need to capture the RF signal for analysis and do some range testing
> but I can probably include support for this in my replacement PIC for the
> MR26 and standalone DIY RF receiver for X-10 with RS232 output.
>

Those Chamberlain devices are also sold by Sears at $34.99.

Craftsman Wireless Garage Door Monitor
Sears item #00953696000 Mfr. model #53696

(the URL was a mess)

The red LED blink rate indicates which of the 4 sensors detects an open door.