Gentex SR Smoke Alarm
Best reliable safety choice for homeowners seeking professional grade protection.
A dependable, hard-wired smoke detector designed for both residential and commercial environments. It prioritizes reliable photoelectric sensing and synchronized safety through hardwired interconnection, ensuring consistent performance without the complexity of smart-home integration.
$74.89
at
Jmac
More S Series options
Who it's for
- Hearing-impaired individuals needing reliable visual emergency notifications
- Homeowners seeking accurate fire detection with fewer nuisance interruptions
- Safety-conscious buyers prioritizing industrial-grade reliability for residential use
Who should skip it
- Renters or DIYers seeking a simple battery-powered setup
- Design-focused homeowners who prefer discreet or stylish smart home devices
- Budget-conscious shoppers looking for basic, low-cost fire protection
Performance breakdown
System Integration
Form A and Form C relays allow seamless connection to broader systems.
Installation Ease
Quick-disconnect harness makes setup straightforward for both pros and DIYers.
Alert Reliability
The 85 dBA horn ensures critical warnings are heard immediately.
Power Redundancy
Hardwired power with battery backup provides essential, uninterrupted protection.
Compliance Standards
UL 217 listing guarantees adherence to rigorous safety and performance codes.
Build Durability
Robust construction includes a dust cover to maintain sensor integrity.
Key Specs
Detection Technology
Photoelectric
Power Source
120VAC Hardwired with 9V Battery Backup
Alarm Sound Level
85 dBA
Dimensions
139.7mm x 139.7mm x 44.45mm
Operating Temperature Range
40°F to 100°F
Relay Contacts
Form A and Form C
Sensitivity
2.5% obscuration
Certification
UL 217
Warranty
1 year
Alert Type
Siren / Beep
Know before you buy
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