Wired Heat Detectors Frequently Asked Questions

Is there a Battery in a 2WT-B Photoelectric i3 Sensor?
No, the 2WT-B smoke detector, by System Sensor, is a low voltage smoke detector that gets its power from an alarm panel. Read on to see how the 2WT-B works.
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What's the wire length limit on a Honeywell VISTA's polling loop?
There are strict limits on polling loop distance, based on current drawn, and wire gauge used. Learn the rules and limits for wiring the polling loop.
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How Do I Connect a 4193SN to a VISTA-128BPT, 250BPT or VISTA-50?
The 4193SN connects to the Vista-128BPT, 250BPT, or 50 through the polling loop on terminals 24 (Positive) and 25 (Negative). Learn how to wire the 4193SN.
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How Do I Program a 4193SN to a VISTA-128BPT, 250BPT, or VISTA-50?
The Vista-128BPT and similar panels use a polling loop for wired expansion. In zone programming, use input type to identify zones. Learn to program a 4193SN.
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Should I Use Resistors on my VISTA 21iP?
When using hardwired zones, it is more secure and tamper proof to use End of Line Resistors to supervise zone wiring. Find out the pros and cons here.
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Lyric Gateway Vs. Honeywell Vista System
This comparison chart highlights common features between the two panel types. Decide which panel is right for you.
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Can I use Lyric as a keypad on 15P, 20P, 21iP, 128bpt?
Can the Lyric be used as a touchscreen keypad for other systems?
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Can I Connect A Wired Smoke To My 2GIG GC3?
Find out if a wired smoke can be connected to a 2GIG GC3
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Can I connect a wired smoke to my L5200 or L7000?
Using the hardwired zone on the L5200 or L7000
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