2-Wire Smoke Detectors Frequently Asked Questions

How Do I Wire and Program a DSC PowerSeries NEO for 2-Wire Smokes?
The DSC PowerSeries NEO uses PGM2 to reset 2-wire smokes. Connect smoke negative to PGM2, connect smoke positive to Aux Positive. Keep reading for full details.
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Are a Smoke Alarm and a Smoke Detector The Same Thing?
No, a Smoke Detector is tied to a separate alarm system. A Smoke Alarm is a stand-alone device or group of devices. Keep reading for details on these devices.
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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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