Entry sensor

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An entry sensor is a device used in the burglar alarm industry to detect when a door or window has been opened. It is a crucial component of any security system as it alerts the homeowner or business owner when someone enters the premises. The sensor is typically installed on the door or window frame and consists of two parts: a magnet and a switch. When the door or window is closed, the magnet and switch are in close proximity, completing a circuit. When the door or window is opened, the magnet moves away from the switch, breaking the circuit and triggering the alarm.

Entry sensors are available in a variety of types and styles, including wired and wireless options. Wired sensors are connected to the alarm control panel via a physical wire, while wireless sensors use radio frequency to communicate with the control panel. Some entry sensors also come equipped with additional features, such as tamper detection, which alerts the homeowner or business owner if someone tries to remove or disable the sensor.

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 entry sensors in protecting homes and businesses from intruders. They offer a wide range of entry sensors to meet the needs of their clients, including wired and wireless options with tamper detection. CGSmith’s team of experienced technicians can install and configure entry sensors to ensure they are working properly and integrated with the rest of the security system.

If you are interested in learning more about entry sensors and how they can enhance the security of your home or business, CGSmith is here to help. You can visit their Contact Us page on the site (https://cgsmith.net/contact-us/) to schedule a consultation with one of their security experts. They will work with you to assess your security needs and recommend the best entry sensors and other security solutions to meet those needs. With CGSmith’s expertise and commitment to customer satisfaction, you can rest assured that your property is protected around the clock.


1. What is an entry sensor in a burglar alarm system?

An entry sensor is a device that detects when a door or window is opened or closed. It is a crucial component of a burglar alarm system as it triggers an alarm when an unauthorized entry is detected.

2. How does an entry sensor work?

An entry sensor typically 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 the alarm.

3. Where should entry sensors be placed in a home?

Entry sensors should be placed on all doors and windows that are potential entry points for burglars. This includes front and back doors, sliding doors, and ground-level windows. It is also recommended to place sensors on any windows that are easily accessible, such as those near a tree or balcony.

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