I've seen ionization ones go off from cooking. I've also seen a photoelectric one that would go off if you just swept the area with a broom and kicked fine dust into the air. I've also seen an ionization one go off if you just spray a canned compressed gas duster into it. I assume that the fluorocarbon gas is harder to ionize (or maybe it is just the fact that there is such a high flow rate that it blows ions out of the way). On Tue, Nov 27, 2018 at 2:09 PM Chris McSweeny wrote= : > On Tue, Nov 27, 2018 at 5:42 PM Harold Hallikainen < > harold@mai.hallikainen.org> wrote: > > > I don't know what kind of smoke detectors we have. but they definitely > > work since they trip pretty often when cooking. That's our "periodic > > test." > > > > I'm not sure if lots of false alarms from cooking is the best test! I'v= e > recently moved onto a narrowboat (for those from other countries you'll > have to google as I think it's a peculiarly English thing, but it's a lon= g > thin boat with living accommodation) and unlike in the typical house I > don't have a door between my kitchen and where the smoke alarm is (right > outside the bedroom door - don't really want to put it the other side of > that). The original smoke alarm was an ionisation type and pretty much an= y > cooking, even just boiling the kettle set it off. I've replaced it with > > https://www.amazon.co.uk/gp/product/B013T9W2AE/ref=3Dox_sc_act_title_1?sm= id=3DA2MTK2J2TB084L&psc=3D1 > which is combined thermal and optical and no longer set off by my cooking= , > but then it's not supposed to be as what it should be detecting is > something different. I presume yours is an ionisation type if your cookin= g > is setting it off. > > Chris > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .