Gentex Corp. SR Smoke Alarm
Best high performance safety solution for homeowners seeking industrial grade reliability.
This is a serious, hardwired safety solution that bridges the gap between residential simplicity and commercial-grade reliability. While it lacks the sleek, app-connected smarts of modern consumer devices, it gains unmatched dependability through its robust relay integration and dual-power backup system. It is built for those who prioritize consistent performance over connectivity.
$78.65
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Who it's for
- Hearing-impaired individuals and heavy sleepers requiring visual emergency cues.
- Homeowners seeking professional-level fire safety and long-lasting hardware.
- Families living in multi-story homes needing synchronized alerts across rooms.
Who should skip it
- Renters or DIY novices looking for a simple battery-operated solution.
- Budget-conscious shoppers looking for the most affordable fire protection.
- Design-focused homeowners prioritizing sleek aesthetics over industrial safety features.
Performance breakdown
System Integration
Relay contacts allow seamless connection to broader building security and automation.
Power Reliability
Hardwired design with battery backup ensures constant protection during power failures.
Alert Effectiveness
The 85 dBA horn provides a piercing, unmistakable warning signal.
Installation Ease
Standard junction box compatibility simplifies setup for both pros and homeowners.
Build Durability
Robust construction meets rigorous commercial standards for long-term operational stability.
Application Versatility
Equally capable in residential bedrooms or demanding commercial hotel environments.
Key Specs
Dimensions
5.5 inches x 5.5 inches x 1.75 inches
Power Source
120VAC Hardwired with 9V Battery Backup
Alarm Sound Level
85 dBA at 10 feet
Operating Temperature Range
40°F to 100°F
Certification
UL 217
Relay Contacts
One Form A and one Form C
Operating Current
0.055 amps
Horn Frequency
3100 Hz
Sensitivity
2.5% obscuration
Detection Technology
Ionization
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