GS509A-2NCDR
Fast Detection. Fewer Nuisance Alarms.
360° smoke entry, dual-wave sensing and adaptive compensation work together for fast, reliable home protection.
UL 217, 10th Edition
Responsive Detection
3-Year Limited Warranty
GS366A-MWAC
Smart Thermostat
Recognized for thoughtful design,
intuitive control, and a smarter
home comfort experience.
2026 IDEA FINALIST
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UL & ETL Certified for Home Safety
Our alarms meet the highest safety standards and are industry certified.
Safety Insights from SITERWELL
Have a question ? We are here to help.
Under what circumstances will the alarm give a false alarm?
Cooking fumes, steam, dust and insects may cause false alarms in smoke alarms; car exhaust or certain chemicals may cause false alarms in carbon monoxide alarms. Our products use intelligent algorithms to reduce false alarms, but it is still recommended to install them in a reasonable location to avoid interference.
What kind of smoke do your alarms detect?
Our smoke alarms use advanced photoelectric sensing technology to reliably detect smoke from both slow-burning and fast-burning fires, including smoke particles from burning common materials such as wood, paper, cloth, etc.
Where should the alarm be installed?
Smoke alarms should be installed on the ceiling, at least 30 cm away from walls or lamps; carbon monoxide alarms should be installed on the wall about 1.5 meters from the ground and 3-5 meters away from gas equipment. Avoid installing in areas prone to false alarms such as kitchens and bathrooms.
How often do alarms need to be tested?
We recommend testing the alarm function once a month, according to the user manual. At the same time, the dust on the alarm surface should be cleaned every month to ensure the sensitivity of the sensor.
How often do the alarm batteries need to be replaced?
Depending on the model, the ten-year life lithium battery does not need to be replaced, and the alarm will remind you when other batteries need to be replaced.