Wired Door & Window Alarm Contacts Frequently Asked Questions

What is the Best Door/Window Sensor for the VISTA-P Security System?
There are many excellent door and window sensors that work well with a VISTA P-Series security system. Hardwired contacts can be used with no additional add-ons. A wireless contact will require a wireless receiver to be added. Learn more about door and window contacts for a VISTA system.
Added:

How Do I Remove a Wired Recessed Sensor?
A wired recessed sensor can easily be removed from a door or window. Simply pull out the sensor from the frame and disconnect the wiring. Then fish out the wire from the other end. The hole can be covered up or left for a new sensor. Learn more about removing a hardwired recessed sensor.
Added:

What is the Best Door/Window Sensor for the VISTA 21iP?
The best door and window sensor for a VISTA 21iP depends upon the needs of the end user. The user will need to decide if they want their sensor to be hardwired or wireless. They will also need to choose between recessed and surface-mounted contacts. Learn more about door and window sensors.
Added:

How Do I Install a Honeywell 951WG in a Door?
Installing a Honeywell 951WG involves drilling holes into both the door and its frame. The sensor and its magnet will be inserted into these holes for a discreet installation. A 2 conductor wire must be run from the alarm system to the sensor. Learn more about installing the 951WG contact.
Added:

What Is a Security Door Contact?
When attached to a door, a security contact will let the system know when the door has been opened. Both wireless and wired door contacts are available.
Added:

What is Zone-Doubling on a Honeywell VISTA System?
Zone-doubling is a method of using different value resistors on zones 2 - 8 to allow 7 hardwired zone inputs to behave like 14 separate zones. This is particularly helpful if you need more than 8 hardwired zones, but fewer than 16. Zone 2, doubled, becomes 2 and 10, zone 3 becomes 3 and 11, and so on.
Added:

Why Isn't My Wired Door Sensor Working?
A wired door sensor may not be showing the correct status due to programming or wiring issues. Read on to find out how to troubleshoot wired door sensors.
Added:

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.
Added:

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.
Added:

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.
Added: