Wireless Motion Sensor
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Wireless Motion Detector Types
Recently, they have become increasingly popular in public restrooms where the toilets, soap dispensers, and faucets are automated. They are also very popular and more useful as security devices which can be connected to bigger security systems. A motion detector can trigger a warning signal, such as an alarm, flashing lights, or a surveillance camera every time it detects movement.
Types of Motion Detectors
You should first be aware of the various types of wireless detectors before purchasing a model. This will help you understand what type of detector is best for your use.
• Ultrasonic Detectors – These motion detectors send out waves of sound frequency that detect the presence of objects. These are older models and have been replaced by more advanced sensors.
• Active Infrared (IR) Detectors – These devices continuously emit radiation, such as light, radar, or ultrasonic waves and senses changes in the environment caused by a passing object. IR detectors are often found in automatic doors used in malls and grocery stores.
• Passive Infrared (PIR) Detectors – Just like IR detectors, PIR devices sense changes in its environment, but they do not emit radiation. Instead, they detect changes in the temperature of objects and people that are within their range of surveillance. They are the ones used mostly for home and office security.
Instead of infrared radiation, CW detectors use microwave signals to detect changes in the frequencies in its environments. They are more sensitive than both IR and PIR detectors and are naturally more expensive. Wireless Motion Detector Types
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