What are the different types of motion sensors?

What are the different types of motion sensors?

There are several types of motion sensors, including passive infrared (PIR), ultrasonic, microwave, and dual-technology sensors. Each type has its own unique way of detecting motion.

How does a passive infrared sensor work?

A passive infrared sensor detects motion by measuring changes in infrared radiation, typically emitted by warm objects like humans.

What are the advantages of using microwave sensors?

Microwave sensors can detect motion through walls and obstacles, have a longer range, and are less affected by temperature changes compared to PIR sensors.

Are there any disadvantages to using ultrasonic sensors?

Yes, ultrasonic sensors can be affected by environmental factors like temperature and humidity, and they may not work well in outdoor settings.

Which type of motion sensor is best for home security?

For home security, dual-technology sensors are often recommended as they combine PIR and microwave technologies, reducing false alarms.