On Oct 3, 6:57*pm, "Robert L Bass"
wrote:
"G. Morgan" wrote:

Maybe someone in ASA can get you a deal on some units.

In my previous home there were 110V smokes in each room they were
interconnected and with 9V backup. *They had very low-pitch buzzers -- *
definitely not piezos. *I don't recall the make or model and I suspect they
were pretty old. *I replaced them with System Sensor detectors.

You've probably seen the outrageously overpriced detectors from "LoudnLow" -- *
a company that makes it's money by gouging hearing deficient victims. *There's
a company that makes a low-frequency sounder which responds to the high-pitch
noise from conventional smokes. *It's called Telex. *Their product is also
pricey but at least you won't be out $1200. *I can't speak for the quality of
their product as I haven't tried one. *Here's a link:

http://www.teltex.com/Home.asp

Hope that helps.

--

Regards,
Robert L Bass

I wouldn't call $159 per unit "gouging" for such a specialized product

https://darro001.secure.omnis.com/products.php