Creating an invisible barrier up to 300 meters, Unifore photobeams are the ideal sensor can protect the perimeter of your premises. They offer distinct advantages when compared to PIR sensors as it uses active infrared technology. Photobeams are able to create an upper and lower beam between IR receiver and IR transmitter, triggering an alarm only when both beams are interrupted therefore can eliminate false alarms caused by falling leaves, branches, animals. Active infrared photobeams are so far one of the best established perimeter security solutions in the market place. They come with relay outputs (NC, NO), can be easily connected with other security systems.
Reliable Active Infrared Technology
180° Adustable Angle, Easy Alignment
Photoelectric Beam Detectors
Reliable and cost-effective perimeter security solution.
Solar powered photoelectric beam barrier, dual-beam, IP66 weatherproof design, 433MHz wireless transmission, compatible with wireless alarm panels
Active Infrared fence barrier integrates solar panel to provide wire-free perimeter detection for garage doors, windows, balconies, up to 500m wireless transmission range, compatible with 433MHz wireless alarm panels
What’s Infrared detection?
Infrared detection technology exists several decade years, it has been proved to be one of the most reliable and effective, yet low-cost methods to detect movement of objects. There are two kinds of infrared detection technologies available in the market, they are passive Infrared and active infrared.
Infrared is a kind of invisible light waves (or invisible radiation). Its wave length lies between the visible and microwave portions of the electromagnetic spectrum. Any object has a temperature radiates in the infrared.
How passive infrared sensor works?
The passive infrared technology relies on changes of reflected Infrared radiation to achieve the detection. PIR motion sensors use this technology, the sensor uses a passive Infrared reception semiconductor to detect the changes of infrared radiation, therefore can recognize if an new object has entered the monitored area. This is the basic principle how the PIR motion sensor works. Passive infrared sensors are prone to false detection due to being sensitive to environmental changes like hot/cot air flow and sunlight. Some advanced PIR motion sensors may combine passive infrared and microwave detection together in order to overcome the PIR’s shortcomings.
What’s active infrared technology?
The active infrared technology, on the other hand emitting infrared light to achieve the detection. An active infrared sensor consists of an IR transmitter (or emitter) and an IR receiver. There are many different products that utilize this technology, active infrared beam detector is one of them. Active infrared beam also is refereed as photoelectric beam, it is mainly used to provide long distance perimeter protection.
Another AIR application is proximity sensor, they can be used in the automatic trash bin, automatic water taps, and elevator. For instance, an elevator is equipped with at least one pair of active infrared sensor which has been used to detect if there is an object in the middle of automated door.
Benefits of active infrared beam
- Long range coverage: Active infrared beam can provide up to 300 meters detection range as the infrared light will be focused to form a beam by the special lens. A PIR motion detector only offer short distance coverage (approximately 110 degree and up to 12 meters distance).
- Low false alarm rate: Multiple beams have been used intending to lower the false detection. Outdoor infrared beam also use a special technique to filter false alarm, it triggers the alarm only when multiple beams are interrupted simultaneously.
- Low cost: There are many other perimeter solutions leveraging many different technologies such as electric-fence, ultrasonic, active tomographic, electron-magnetic field, passive audio. Active Infrared beam solution is mature and effective, yet low cost.
- Low power consumption: As using the Infrared LED as the light sources, they consume low power, a typical infrared beam detector can use DC/AC 12-13.8V power sources. Wireless infrared beam detectors even can use solar panel as the main power source.
Can active Infrared beam work standalone?
Depends on which product you refer to. The most active infrared detectors can not work independently, they usually come with relay output to be integrated with other security systems. The relay output includes normal open and normal close. It should be noted that the EOL resistor need to be used in the alarm panel’s wiring.
Does sun or light will interfere the Infrared beam?
Sun or strong lights do interfere the infrared beam, but the impact is minimum. Because all active Infrared beam detectors use anti-UV transparent housing to avoid being interfered by strong lights. Moreover, infrared and visible lights are belong to different spectrum, unlikely will interfere each other. Lastly, active infrared beam detectors use special wavelength to avoid the IR being replicated.