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ALARM SENSORS

Glass Breakage Detector

Glass breakage sensors are designed to exclusively detect the sound produced when glass is being broken. Specially designed band-pass filters only respond to the frequencies associated with glass smashing. Originally produced to replace shock sensors used for protecting glass. Glass breakage sensors ensure you never have the " cat jumping on the bonnet" false alarm problem.

Microwave Motion Sensor

Designed to provide intrusion detection for soft-top and convertible vehicles. The sensor establishes a self contained perimeter, which when broken will transmit a trigger signal to the connected alarm system.  Microwave sensors can also be used to enhance the protection of expensive car stereo equipment and seat covers. Microwave fields are not effected by movement of air or heat, so allowing ventilation through the vehicle will not cause false alarms.

Ultrasonic Motion Sensor

Ultrasonic sensors are designed to provide intrusion detection of vehicles fitted with sliding windows (as apposed to wind-up) and utilities fitted with canopies. A transmitter produces ultra high frequency sound waves which bounce off all surfaces inside the car. A  receiver then picks up the reflected sound waves and sends a trigger signal to the connected alarm when a change in the shape of the echo is detected. Ultrasonic sensors require a rigid, stable perimeter with no air movement, i.e. convertibles will not reflect sound waves and soft-top roof's will cause false alarms when moved by wind.

Shock Sensor

Shock sensors are designed to detect vibrations caused by motion of the vehicle. Excellent for protecting the windows and wheels of your car. Breaking any glass plane cause shock waves to pass through the metal structure of the vehicle. Jacking up a car and loosening wheel nuts will also cause movement. The shock sensor sends a signal to the attached alarm when either event occurs.

Tilt Sensor

The device is based on two angular transducers. The system is controlled by a built-in microprocessor which automatically adapts to the position of the vehicle. Angular variations are analysed, and any minor disturbances (heavy vehicle vibration or wind-induced movement) are ignored. When genuine third-party intervention is detected (car being lifted or tyres deflated) the sensor outputs a signal to the attached alarm system. Digital signal filtering improves sensor performance.

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