Wired Door & Window Alarm Contacts Frequently Asked Questions

What is the Difference Between a 5816WMWH and a 5816?
The difference between a 5816WMWH and 5816 is that the 5816WMWH includes a magnet whereas the 5816 does not. The magnet can be used with the internal reed switch to monitor status of a door or window.
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Can I Install a Window Contact on a Honeywell Alarm?
A window contact can be installed on any Honeywell panel. The optimal window sensor depends on the model of the panel and the applications that are needed.
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What Do Normally Closed and Normally Open Mean?
"Normal" is the normal state of an opening, such as a door. Normally open/closed refers to the state of a contact connected to a door in its normal position.
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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 Add a 4193SN to My VISTA-128BPT, 250BPT or VISTA-50?
The 4193SN is an expansion device which allows users to add conventional devices to the polling loop by programming its serial number into the zone(s). Read on.
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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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What Sensors Work on a VISTA-20P?
The Honeywell VISTA-20P is a wired alarm control panel but is also compatible with Honeywell 5800 series wireless devices. Learn compatibility details here.
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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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Will Wired Sensors Work on Any Alarm Panel?
Wired sensors have different properties which may make them compatible or not compatible with an alarm system. Find out if wired sensors work with your system!
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