Door & Window Alarm Sensors Frequently Asked Questions

Where Can I Buy Alarm Contacts?
Alarm Grid offers all of the door and window contacts you need for your alarm system. We offer door and window sensors of all types. Learn about our alarm contacts.
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How Does a Door Contact Sensor Work?
The typical door contact consists of a sensor and a magnet. When the door opens, the magnet separates from the sensor. The sensor then alerts the panel. Learn about door contacts.
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What is a Door Contact Sensor
Alarm systems use door contact sensors to know whether or not doors are opened or closed. This is important for monitoring building activity. Learn about door contacts.
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How Do I Install a Wireless Door Sensor on a Sliding Patio Door?
On a sliding door, the magnet and sensor should be aligned so that they separate whenever the door is slid opened. Learn how to install a door sensor on a sliding door.
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What is a Magnetic Contact?
Most door and window contacts operate using an internal reed switch in conjunction with a magnet. Learn about door and window sensors and how they operate.
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Can I Use Door/Window Sensors on a Qolsys IQ Panel 2?
The standard daughterboard for the IQ Panel 2 will accept sensors that communicate at the 319.5 MHz frequency. This includes any door and window sensors. If a different daughterboard is added, the sensors will need to operate at a different frequency. Learn more about the Qolsys IQ Panel 2.
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Do Door/Window Sensors Work w/ the Interlogix Simon XTi or XTi-5?
A compatible door and window sensor can be enrolled with a Simon XTi or XTi-5 System in basically the same way as any other compatible sensor. The sensor will be assigned a group number appropriate for a door or window. Learn more about using door and window sensors with the Simon XTi and XTi-5.
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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 5819WHS
The 5800MINI and the 5819WHS are both sensors from the Honeywell 5800 Series. The 5819WHS can function as a shock sensor, wireless transmitter and alarm contact. The 5800MINI can only be used as a door and window sensor, but it is more compact than the 5819WHS. Learn more about these devices.
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