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A battery photoelectric smoke alarm that needs no battery changes and switches on when mounted. It senses smoke only, so add separate carbon monoxide protection.
A compact battery smoke alarm with a photoelectric sensor, AA batteries in the box and a loud alarm. Nothing is listed for wiring or linking units.
A photoelectric smoke alarm that runs on AA cells supplied in the box. It is a smoke detector only, with no hardwiring, interconnect or carbon monoxide function listed.
A battery powered smoke alarm that combines photoelectric and ionization sensing for both smoldering and flaming fires. The replaceable battery needs regular changes, and it does not detect carbon monoxide.
A basic hardwired combo alarm for homes replacing First Alert units on existing wiring. The listing is thin: no interconnect, battery type, voice or certification details.
A sealed battery smoke alarm for hallways that lights the path when it sounds. The listing gives no sensor type, size or mounting details.
A hardwired smoke and fire alarm with a sealed backup battery that needs no replacement over its life. It is a fit for a home that wants no low-battery chirps, but the listing says nothing about interconnect options.
A battery combination smoke and carbon monoxide alarm with voice warnings and no battery changes. No interconnect is described, and the item count conflicts.
A hardwired smoke and fire alarm with long-life battery backup, suited to replacing an existing wired unit. The listing is very thin, so check sensing and interconnect details with USI before buying.
A plug-in carbon monoxide detector with a battery backup, digital display and loud alarm for home use. It detects CO only, so it does not replace smoke alarms.
A six pack of hardwired ionization smoke alarms with battery backup and interconnection for a single family home. The model number and power source fields conflict with the title.
A standalone photoelectric smoke alarm on a sealed ten year battery, installed without wiring. It is listed as a standalone model, so linking several alarms together needs a different product.
A hardwired smoke alarm with a battery backup and a wireless link to other First Alert alarms. The power source field says battery powered, which conflicts with the hardwired description.
A two-pack of hardwired photoelectric smoke alarms with sealed ten-year battery backup and interconnect for whole-home coverage. They detect smoke only, so carbon monoxide needs a separate alarm.
A hardwired smoke alarm with a long-life backup battery that links to other compatible alarms. It detects smoke only, so pair it with a CO alarm.
A solid hardwired replacement for an interconnected smoke alarm circuit, with sensing tuned to cut down on cooking-related false alarms.
A wireless interconnected smoke alarm with a sealed long-life battery and no wiring needed. It senses smoke only and links only with X-Sense Link+ alarms.
A smart heat alarm for crawl spaces, laundry rooms and garages, combining fixed temperature and rate-of-rise sensing with remote muting. It needs hardwiring, and the warranty term is not stated.
A two-function hardwired alarm worth considering when replacing an aging hardwired smoke-only unit where CO coverage is also wanted in that spot.
A low-maintenance 2-in-1 smoke and CO alarm for anyone who wants both hazards covered by a single sealed unit.
A capable two in one alarm with a sealed 10 year battery that most reviewers found easy to install and reliable, though a couple of buyers hit a dead unit out of the box, so it is worth testing right after installing.
A hardwired smart smoke alarm with phone alerts, a voice warning and a battery backup that lasts its life. Its carbon monoxide sensing is unclear, so plan a separate CO alarm.
A smart upgrade for homes with Kidde hardwired alarms, adding phone alerts and remote hush. It detects smoke only and needs existing house wiring.
A small battery smoke alarm approved for recreational vehicles, with a locking pin so the battery stays in. It covers smoke only and the listing does not say which battery it takes.
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