Magnetic contact sensor

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In the commercial and residential burglar alarm industry, a magnetic contact sensor is a crucial component of any security system. It is a small device that is installed on doors and windows to detect when they are opened or closed. The sensor consists of two parts: a magnet and a switch. The magnet is attached to the door or window, while the switch is mounted on the frame. When the door or window is opened, the magnet moves away from the switch, triggering an alarm.

Magnetic contact sensors are an effective way to secure a property against unauthorized entry. They are easy to install and can be integrated with other security devices, such as motion detectors and cameras. They are also affordable, making them a popular choice for both residential and commercial properties.

In addition to detecting intruders, magnetic contact sensors can also be used to monitor the status of doors and windows. For example, they can be programmed to send an alert when a door is left open for an extended period of time. This can be useful for businesses that want to ensure that their premises are secure and energy-efficient.

CGSmith is a business and residential security system installation and monitoring company based out of the Milwaukee WI area. As a leading provider of security solutions, CGSmith understands the importance of magnetic contact sensors in protecting homes and businesses. They offer a range of security systems that include magnetic contact sensors, as well as other devices such as motion detectors, cameras, and access control systems.

If you are interested in learning more about magnetic contact sensors and how they can enhance the security of your property, CGSmith is here to help. You can visit their Contact Us page on the site ( to get in touch with their team of experts. They will be happy to answer any questions you may have and provide you with a customized security solution that meets your specific needs. With CGSmith, you can rest assured that your property is protected against intruders and other security threats.


1. What is a magnetic contact sensor and how does it work in a burglar alarm system?

A magnetic contact sensor is a device that is used in burglar alarm systems to detect the opening and closing of doors and windows. It consists of two parts: a magnet and a switch. The magnet is attached to the door or window frame, while the switch is attached to the door or window itself. When the door or window is closed, the magnet and switch are in close proximity, which completes an electrical circuit. When the door or window is opened, the magnet and switch move apart, which breaks the circuit and triggers the alarm.

2. What are the benefits of using magnetic contact sensors in a burglar alarm system?

Magnetic contact sensors are a popular choice for burglar alarm systems because they are reliable, easy to install, and cost-effective. They can be used to monitor multiple doors and windows, and can be wired or wireless. They are also low-maintenance and require minimal upkeep. Additionally, magnetic contact sensors can be integrated with other security devices, such as motion detectors and cameras, to provide a comprehensive security solution.

3. How do I choose the right magnetic contact sensor for my burglar alarm system?

When choosing a magnetic contact sensor for your burglar alarm system, there are several factors to consider. First, you should determine whether you need a wired or wireless sensor. Wired sensors are typically more reliable, but can be more difficult to install. Wireless sensors are easier to install, but may be less reliable in areas with poor signal strength. You should also consider the size and type of doors and windows you need to monitor, as well as the level of security you require. Finally, you should choose a reputable brand and ensure that the sensor meets industry standards for quality and performance.

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