Smoke detector set off by high heat no smoke causes false alarm. 

this heat is crazy

@NIC'S SYSTEMS & ELECTRIC even residential smoke alarms can be cause by heat,steam and dust. which is annoying and can be a big problem

So with EST smoke detectors, on the base, there is a thermal resistor. When the detector is on the base, and the resistor gets hot enough, it shorts the alarm contacts to the detector. This would explain why heat set off the smoke detector. Hope this helps!

This is how they work it’s not the smoke that sets them off it’s the heat. So if you take a hot steamy shower or you leave the oven door open too long or you light candles on a cake the heat sets the alarm off.

This is really interesting especially with the rules on smoke detectors in canada. In the USA the general rule is that you wouldn’t have any area or room that doesn’t have smoke detectors because a smoke detector will activate much faster before a sprinkler, this gives time for personnel to investigate the problem and perhaps put it out with a portable extinguisher. Sprinklers then are more of a last resort type of thing. The high school I go to doesn’t have a single area not covered by smoke detectors or a rate of rise heat detector, and of course fully sprinklered too.

Ohh could be the smoke detector damaged? I didn't hear about a smoke detector activating because of heat! At least with notifier that won't happen! Stay safe and have fun! ...

This actually happened yesterday 111 degrees. No smoke went off but very hot

That happened at my Elementary school. The gym got really hot and set off the fire alarms.

The temperature where EST Edwards/Kidde Smoke detectors activate is lower than 40°F (4°C) and higher than 100°F (38°C)

Cool

Maybe the Smoke Detector is a Smoke Detector and Heat Detector combo, and no one knew that?

I left bc at the right time 40c is crazy hot

Is that smoke heat/smoke

I take it the school doesn't have A/C?

Lol his first idea is to blame it on est. yea i think it’s best to replace it with a older detector so there is t that much for the heat to short on the detector. Dammit global warming lol

But it is summer break

Cold air can trigger a smoke detector

I think the smoke detector is broken that why it whan off the alarm