Heat Detectors Frequently Asked Questions

Is There a Battery Operated Heat-Only Detector?
Heat-only detectors are good for areas where smoke detectors may cause false alarms. These areas include kitchens, bathrooms, garages and attics. Learn about heat detectors.
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What is a Heat Detector?
If you have a room where a standard smoke detector might cause a false fire alarm, you might use a heat detector instead. Learn what heat detectors are and how they work.
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Where Should I Install a Heat Detector?
Certain areas of the home are better-suited for heat sensors than smoke sensors. Using heat sensors instead of smoke sensors can prevent false alarms. Learn about heat detectors.
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Smoke Detector vs. Heat Detector
A smoke detector responds to the presence of smoke. A heat detector responds to unusually high temperatures. Both indicate that there is a fire. Learn about fire-safety products.
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What's the Best Place to Install a Heat Detector?
There are certain applications in which using a standalone heat detector makes sense. This includes installations in environments that often feature smoke or dust that could potentially cause a false alarm on a smoke detector. Learn more about choosing a location for a heat detector.
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When Should I Use a Heat Detector Instead of a Smoke Detector?
There are a few situations where it is better to use a heat detector instead of a smoke detector. This includes rooms where smoke may be present. Heat detectors are also used in dusty areas where fine particles may cause false alarms for heat detectors. Learn more about heat detectors.
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How Does a Fire Detector Work?
There are two primary methods for detecting a fire. These are through either smoke detection and heat detection. For that reason, a "fire detector" is more commonly referred to as a "smoke detector" or a "heat detector". There are also combo smoke and heat sensors. Learn more about these devices.
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Honeywell 5800COMBO vs Honeywell 5809
The 5800COMBO and the 5809 are both wireless fire sensors from Honeywell. The 5809 is for heat detection only, while the 5800COMBO is used for heat, smoke and carbon monoxide detection. Both sensors will interface with the same alarm systems. Learn more about these life-safety sensors.
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How Do I Change the Battery in the 5800COMBO?
The 5800COMBO is powered by four CR123A lithium batteries. To change these batteries, start by removing the device from its back plate. Then replace the old batteries with four new ones. Then reapply the device to the back plate. Learn more about replacing the batteries in a Honeywell 5800COMBO.
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How Do I Test My 521BXT Smoke Detector for Proper Function?
To test a 521BXT Smoke Detector for proper function, use canned smoke to test the device's smoke detection and a hair dryer to test its heat detection.
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