My sister-in-law bought a replacement smoke detector and carbon monoxide alarm to replace her existing one in her condo. But she needs to replace all three of them with the same model. She has Kiddie branded smoke detectors. Her loss is your gain. New but package is open. Bought from Lowes.
https://www.rona.ca/en/product/first-alert-hardwired-120-v-white-smoke-and-carbon-monoxide-detector-with-battery-backup-1043251-71585137?viewStore=63650&cq_src=google_ads&cq_cmp=6658267564&cq_con=77922239974&cq_term=&cq_med=pla&cq_plac=&cq_net=g&cq_pos=&cq_plt=gp&&cm_mmc=paid_search-_-google-_-shopping_aw_lia_generic_allproducts-_-71700000064189331&gad_source=1&gclid=Cj0KCQjwq86wBhDiARIsAJhuphkOdmx8TbmSDlMyAGV_THGdyOlfWTiOQXgN3K581hw4GORoUaCh9R4aAo6REALw_wcB&gclsrc=aw.ds
