Smoke & CO Alarm HM-638THM-AC
|
Model |
HM-638THS |
HM-638THM-AC |
|
Power Supply |
DC 3V (1 × CR-2/3AZ Lithium Battery) |
120V AC, 60Hz, with 1 × CR-2/3AZ Backup Battery |
|
Battery Life |
10 years (Battery Not Replaceable) |
10 years (Battery Not Replaceable) |
|
Alarm Indicator |
Red LED Flashes, Alarm Sound ≥85 dB (at 10 ft) |
Red LED Flashes, Alarm Sound ≥85 dB (at 10 ft) |
|
Operating Temperature |
40°F (4.4°C) ～ 100°F (37.8°C) |
40°F (4.4°C) ～ 100°F (37.8°C) |
|
Operating Humidity |
≤95% RH (Non-condensing) |
≤95% RH (Non-condensing) |
|
Dimensions |
L124.8 mm × W124.8 mm × H37 mm |
L124.8 mm × W124.8 mm × H37 mm (Without Mounting Bracket) |
|
Certification |
ETL UL 217+CAN/ULC S531 |
ETL UL 217+CAN/ULC S531 |
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Hardwired Interconnect Whole-Home Alarm Response
Compatible alarms can be interconnected through AC hardwiring. When one alarm detects smoke or carbon monoxide, all interconnected devices sound simultaneously, ensuring fast alerts throughout the home. -
Two Risks, One AlarmSmoke & CO Detection
One alarm monitors two critical threats: smoke from fires and carbon monoxide (CO), an invisible and potentially dangerous gas. Dual detection provides comprehensive protection against both fire and CO hazards, helping keep your home safer. -
10-Year Backup Power Ready When Needed
Built with a 10-year backup battery, the alarm remains operational even when the primary power supply is interrupted. Reliable backup power helps maintain continuous protection and keeps your home safer around the clock. -
Dual-Wavelength Detection Kitchen Fume Resistance
Dual-wavelength detection using red and infrared light enhances smoke sensing while helping reduce interference from cooking fumes. Designed for more reliable detection in everyday kitchen environments. -
Smart Status Alerts Low Battery & Fault Warning
Powered by AC hardwiring with a backup battery,the alarm provides low-battery, end-of-life and fault warnings. Automatic alerts help identify issues early and keep the alarm ready for reliable protection. -
Extra-Large Button Easy Test & Silence
The extra-large button makes testing and silencing the alarm quick and easy. Its user-friendly design provides simple, intuitive control for everyday use and peace of mind.
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