Honeywell 5820L Frequently Asked Questions

What Is the Best Alarm Contact?
There is no single best alarm contact. Many different types of door and window contacts are available, and the best one depends on the needs of the user. There are several questions to ask when looking for an alarm contact so that you can obtain the perfect one. Learn more about alarm contacts.
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How Does a Door/Window Alarm Sensor Actually Work?
Most door and window sensors work in the same manner. These devices consist of both a sensor and a magnet. When the door or window opens, the magnet will become separated from the sensor. This will cause the sensor to send a signal to the security system. Learn more about door and window sensors.
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Honeywell 5800MINI vs Honeywell 5820L
The Honeywell 5800MINI and the Honeywell 5820L are both wireless door and window contacts. They both operate at a wireless frequency of 345 MHz, making them compatible with the same alarm systems. Their biggest difference is their shape. Learn more about these two Honeywell alarm contacts.
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How Do I Replace Batteries in Honeywell Door/Window Sensors?
Replacing the battery in a Honeywell door and window sensor is a simple process. First determine the type of battery that the sensor uses. Then remove the back cover and the old battery. Finally, insert the new battery into the sensor. Learn more about replacing batteries in a door sensor.
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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.
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What Are the Best Alarm Contacts for Sliding Doors?
When selecting a contact for a sliding door, it is generally wise to choose a thin contact so that it can properly fit on the sliding door. The user will need to decide if they want to use a wireless contact or a wired contact. Learn more about choosing an alarm contact for a sliding door.
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What Type of Battery Does My Honeywell Wireless Door Sensor Use?
Honeywell wireless door sensors generally use one of three battery types. These are CR123A lithium batteries, CR2032 coin batteries and AAA batteries. A door sensor will typically require a new battery every three to five years. Learn which battery type is right for your wireless door sensor.
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How Do I Program a 5820L to a Lynx Touch Panel if the Serial Isn't on the Label?
If the serial number isn’t listed on your 5820L sensor, you can still learn it into your Lynx panel by auto-enrolling it through the zone programming menu.
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How Do I Install a 5820L Slim Line Sensor?
When installing a 5820L door and window sensor, you will want to mount the device on the frame of the door or window and its magnet on the moving portion.
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What's the Best Window Sensor for the Honeywell L3000?
There are many great window sensors from the Honeywell 5800 Series that pair well with the Honeywell L3000. The best window sensor depends on the user's needs.
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