Exactly. Here in Folsom, Sacramento County, we are required to have wired smoke detectors AND battery powered carbon monoxide detectors. In fact, we had our roof replaced a few years ago and the building inspectors would not pass it unless those carbon monoxide detectors were installed. For backup we also installed battery powered smoke detectors in each room.
73, Jim / W6JHB > On Oct 30, 2020, at 1:01 PM, Jim Brown <j...@audiosystemsgroup.com> wrote: > > It's important to understand that these safety codes are LOCAL -- usually by > state, but also by county and/or city. There are "guideline" codes, like the > National Electric Code, that are adopted by most local authorities, and those > guideline codes are updated every few years. Often the local code (which is > the Law) is years behind. > > California law DOES require smoke detectors. I don't know enough about the > law to know the limitations on type. The ones we have are stand-alone, > running on a standard replaceable battery. > > 73, Jim K9YC > > On 10/29/2020 7:14 PM, Hank wrote: >> We switched to wireless alarm connected, internal battery detectors due to >> the occasional RFI interference caused by running a little power on 80 >> meters. Our alarm company actually had some experience with RFI issues and >> made the recommendation. I installed them and have a calendar reminder to >> swap the batteries every fall when the time changes. >> Local fire code does not require detectors. Insurance folks give us a break >> on rates for having them - wired or otherwise here in Ga. >> Hank >> K4HYJ >>> On Oct 29, 2020, at 5:36 PM, Jim Brown <j...@audiosystemsgroup.com> wrote: >>> >>> Most RFI to/from ham radio and "devices" is caused by poorly designed >>> electronics using interconnected wiring as TX/RX antennas. Because of the >>> frequencies on which they operate, WiFi-connected devices with no exterior >>> wiring are inherently FAR less likely to create or receive RFI IF they >>> operate on internal batteries. If running from the AC line or a switching >>> power supply (wall wart, wall lump, etc.) the PSU will almost certainly >>> create RFI noise and wiring both on the AC and DC side will radiate it. >>> >>> Bottom line -- choose stand-alone devices with internal batteries and no >>> external wiring for minimum RFI. >>> >>> In your situation, I would try one of them before returning them. >>> >>> 73, Jim K9YC >>> >>>> On 10/29/2020 12:57 PM, Harlan Sherriff via Elecraft wrote: >>>> Dave, I totally agree. I am sure the “problem” the manufacturer is >>>> cautioning about is RF, since my original post was about “wireless >>>> connected” detectors. My gripe was nothing in the sales literature warned >>>> against it. Not till I bought the units and read the installation guide >>>> Sent from my iPhone >>>>>> On Oct 29, 2020, at 3:51 PM, Dave B via >>>>>> Elecraft<elecraft@mailman.qth.net> wrote: >>>>> >>>>> Well, RF (AKA "Radio Waves") can falsely trigger all sorts of equipment >>>>> that was not "designed" to work with, or be influenced by them. >>>>> >>>>> That is the classic EMC Susceptibility or Immunity problem. Basically, >>>>> poor design and/or implementation of the affected (or sometimes bad >>>>> installation of an otherwise good) device. >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to h...@optilink.us > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to w6...@me.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
