Wireless & Hard-wired alarm systems uses , advantages and disadvantages
The home alarm systems are the electronic devices which help the user to detect the intrusion , the fire , gas leak , panic and more , Most systems are easy to learn and...
Tagged: Security devices
Microwave Motion Detector (Microwave sensor) uses, features, cons & pros
Microwave Sensor It is also called Doppler Radar , It is sensitive to the reflect microwave from the objects , without interference from temperature , It has the advantages of low power consumption ,...
