In this videoI talk about ionization vs. photoelectric smoke alarms. Thank you for viewing! Follow me on twitter: https://twitter.com/SER_Safety instagram: https://www.instagram.com/s.e.r._safety/?hl=en Check out my eBay account! Here, I sometimes sell alarms seen in my videos: http://www.ebay.com/usr/thecommunitystore Grant (2nd Channel): https://www.youtube.com/channel/UCyA251kebpkxsnIZbG6lA0w Thanks! :D ©S.E.R. Safety™ 2017 Do not copy any content on this channel without permission. . ________________ 12/29/2020 UPDATE Get fire alarms for hobby usage: Want to support this channel and build a fire alarm collection? Check out sersafety.com