Safety
Photoelectric Hardwired Smoke Detector with 9V Backup — Interconnected
Product description
High-sensitivity photoelectric sensing: This detector employs a photoelectric chamber tuned to detect smoldering fires and combustion particles. The sensor is engineered to respond rapidly to thick smoke while being less likely to trigger from short bursts of steam or minor kitchen smoke, helping cut down on false alarms.
Dual-power design and backup: The unit is designed for 120V AC hardwired installation and includes a replaceable 9V backup battery to maintain operation during power failures. The battery backup supports continuous protection if building power is interrupted and is user-replaceable to keep the alarm functional year-round.
Interconnects up to 12 units: When wired together, up to 12 compatible detectors will sound simultaneously if any one unit senses smoke, providing synchronized audio and visual alerts throughout a home. The alarm emits an 85 dB tone and features a red LED strobe for clear, immediate warnings.
Package contents and physical details: Each package typically includes the smoke alarm, a round mounting bracket, a preinstalled or included 9V battery, and a dust shield for installation. The housing is constructed from flame‑retardant ABS+PC composite for heat resistance and durability. The compact round housing measures approximately a standard ceiling unit (roughly 5 inches / ~125 mm diameter) to fit most existing mounting footprints.
User controls and standards: A multifunction Test/Silence button lets you perform regular self-checks and temporarily silence nuisance alarms for a limited period. The unit provides audible chirps and LED flash patterns to indicate low battery or fault conditions. It is manufactured and tested to meet UL217 10th Edition requirements for household smoldering-fire detection.
Pros
- Photoelectric sensor reduces cooking/steam false alarms
- Hardwired with 9V battery backup for uninterrupted protection
- Interconnects up to 12 units for whole-home alerting
Cons
- Hardwiring may require basic electrical knowledge
- No built-in carbon monoxide detection
- Backup uses a replaceable 9V battery that needs periodic replacement
VerdictA solid choice for homeowners who want reliable smoldering-fire detection and full-house interconnectivity without constant false alarms. The photoelectric sensor reacts quickly to slow, smoky fires while minimizing nuisance activations from everyday cooking. Hardwired 120V operation paired with a replaceable 9V battery ensures continuous protection through outages, and the unit’s interconnect fea
Reader reviews
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Elizabeth 5/5
Feeling safer with a matching set
Replaced older alarms with a uniform set. The white finish blends into the ceiling, they use a 9V backup, and tests have worked fine. Happy with the upgrade.
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Vicky Lee 5/5
Performs well
Works reliably and was easy to mount.
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Certified 4/5
Affordable and functional
They do the job, were inexpensive, and installation was very easy. Good overall value.
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martha malone 5/5
Simple installation
Installation was quick and straightforward.
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Family Reviews 5/5
Interconnect feature actually useful
I placed these in living areas and bedrooms and they’ve behaved exactly as needed. The interconnect is the standout—when one senses smoke, all linked units sound so you’re alerted wherever you are in the house. Setup was straightforward without hiring an electrician thanks to the hardwired connection plus the 9V backup. The photoelectric sensor has avoided the random false alarms you get with some other types, and the test/silence controls are handy.
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W.R. 5/5
Four-pack with everything included
The set arrived with four individually boxed alarms, each including the unit, mounting bracket, a 9V battery, and a dust shield. They fit into the existing openings perfectly and the interconnect feature gives good peace of mind for a whole-house solution.
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Max C 5/5
Mixed-system compatibility worked for me
I added these alongside existing hardwired units from another brand and they paired well for my setup. I didn’t need voice alerts or extra features; I just wanted dependable, interlinked smoke detection. These photoelectric units work best near the kitchen and performed well in my open-plan layout.
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liz lewis 5/5
Good build
Solid quality.
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