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Microwave Sensors for Home Security

Microwave Sensors

Microwave Sensors

In this article, we tried to give brief information about Microwave Sensors, which have an important place in motion sensors. Microwave Sensors are also known as Doppler motion detector units. The difference is that they generate motion signals with a kind of microwave method called “Doppler radar signal”.

You can find more information about Microwave Sensors and other security sensors in other articles on our website.

Motion sensors and cameras have a special place in home security systems. Before you learn about microwave sensors, it makes your job easier to have a general knowledge of all motion sensors and security cameras.

Microwave sensors (or Doppler motion detector units) operate at frequencies of 10 Mhz. They use a Doppler radar signal that reflects microwaves from objects, then they measure the frequency of the returning microwaves and make a comparison. If an object is moving within the range of the Microwave sensor, the returning microwave will be at a different frequency higher or lower than the original signal transmitted.

You can also check out our newly created Home Security Facebook page and the previous 3 articles: Glass Break Sensors, Motion Detectors,

What are the pros and cons of microwave sensors?

Microwave motion detectors have a wider range of effects and are capable of detecting greater distances. Microwaves used by these sensors can also penetrate walls. Therefore, microwave safety sensors can also be placed behind objects.

A drawback to using microwave sensors in a home security setting is their strong sensitivity, which makes them hard to set or adjust effectively, and makes them vulnerable to interference from other electrical devices such as lighting and radios.

These detectors can be programmed to reduce the number of false alarms without having to reduce the correct alerts. This adjustable feature increases their ease of use. In addition, even if microwave detectors cost higher to operate, the cost of acquiring them is generally lower, meaning their retail prices are cheaper.


If microwave sensors are not compatible with your home situation, try these other types of sensors:

  • Infrared Sensors
  • Acoustic Sensors
  • Vibration Sensors
  • Photoelectric Sensors
  • If you need more information about microwave sensors and other home security systems, you can browse this website to find what you are looking for.