2-Wire Smoke Detectors Frequently Asked Questions

Can The 2-Wire Smoke Zone On The Qolsys IQ Hardwire 16-F Support One-Go-All-Go?
It is not possible to use a power reversing relay with the 2-wire smoke detector zone on the IQ Hardwire 16-F to support one-go-all-go. Learn more about the IQ Hardwire 16-F.
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Why is Total Connect 2.0 Showing the Incorrect Life-Safety Alarm for My VISTA-128BPT?
Any VISTA-128BPT running FW Version 11.4 or lower with 2*22 enabled will display the wrong alarm type when a fire alarm is initiated on Partitions 2 - 8. Learn about this issue.
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How Do I Wire and Use a COSMO-2W Combination Smoke/CO Detector?
Wiring a COSMO-2W is very similar to using a 4-wire smoke. The COSMO-2W connects to a COSMOD-2W. The COSMOD-2W then connects to the panel. Learn to use the COSMO-2W.
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Which Smoke Detectors Work w/ a Honeywell VISTA-15P?
A VISTA-15P can support 2-wire and 4-wire smoke detectors. Wireless Honeywell 5800 Smokes can be used if a wireless receiver is added. Find out which smokes a 15P can support.
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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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Why Is The 2-Wire Smoke Zone On My Hardwire 16-F Not Working Correctly?
A 2-wire smoke must be wired correctly at Zone 16 to work with the Hardwire 16-F. The zone must be recognized as a Normally Closed zone. Learn to troubleshoot your 2-wire smoke.
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How Do I Properly Add a 2-Wire Smoke Zone to My Qolsys Hardwire 16-F?
When adding a 2-wire smoke detector to a Qolsys Hardwire 16-F, you must wire the zone before trying to learn it with the panel. Learn how to add a 2-wire smoke to a Hardwire 16-F.
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How Do I Know Whether to Use 2-Wire or 4-Wire Smoke Detectors?
The typical DIY user will want to use 2-wire smokes since they are easier to install. But 4-wire smokes offer greater flexibility in choosing a zone. Learn about smoke detectors.
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How Do I Reset the Fire Alarm on My Security System?
In most cases, disarming the system twice will reset the fire alarm and clear the display. The smoke detector must be free of smoke when doing this. Learn to reset the fire alarm.
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