Smoke & CO Alarm HM-638THS
Heiman Smoke and Carbon Monoxide Alarm HM-638THS is a standalone dual-protection alarm designed to help safeguard homes against two critical hazards: smoke from fire and carbon monoxide (CO). Combining reliable smoke detection with sensitive CO monitoring in one compact device, it provides fast and effective warning when dangerous conditions are detected. With independent detection and audible alarm functions, the HM-638THS delivers continuous protection and helps families respond quickly to potential fire and CO poisoning risks.
SPECIFICATION
|
Model |
HM-638THS |
|
Power Supply |
DC 3V (1 × CR-2/3AZ Lithium Battery) |
|
Battery Life |
10 years (Battery Not Replaceable) |
|
Alarm Indica～r |
Red LED Flashes, Alarm Sound ≥85 dB (at 10 ft) |
|
Operating Temperature |
40°F (4.4°C) ～ 100°F (37.8°C) |
|
Operating Humidity |
≤95% RH (Non-condensing) |
|
Dimensions |
L124.8 mm × W124.8 mm × H37 mm |
|
Certification |
ETL UL 217+CAN/ULC S531 |
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Two Risks, One Alarm Smoke & 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. -
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. -
Extra-Large ButtonEasy 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. -
10-Year Battery Life Long-Lasting Protection
Powered by a long-life battery, the standalone smoke and CO alarm provides up to 10 years of reliable protection. Long-lasting power reduces the need for frequent battery replacement, keeping your home protected day and night. -
Stay Ready, Stay Protected
The alarm provides timely warnings for low battery and device faults, helping you identify potential issues early. Proactive alerts ensure the alarm stays in reliable working condition for continuous protection. -
Versatile Home Protection
Ideal for bedrooms, kitchens, living rooms, attics,rental apartments and more. Its compact design blends seamlessly into various home styles without taking up unnecessary space.
