Infrared Motion Detection

• Optical Fibre Coupled
• Day and Night Operation
• Short and Long Distance Coverage
• Weather Proof
• Various Models

Passive Infrared Detectors (PIRD) are designed for outdoor perimeter protection with coverage ranges of up to 150 m. They react only on movement into or through a precisely defined curtain shaped field of view and disregard slow changes of the surrounding temperature caused by the weather conditions.
These unique detection features make the passive infrared detectors, the PIRD Series, the right choice for perimeter surveillance of any size since multiple units can be combined to provide longer ranges. Another important benefit of the PIRD series is the discreet design which lets it blend into the background without attracting attention. As the PIRD does not emit any detectable signals whatsoever and resembles camera housing, it is virtually impossible for a potential intruder to know how the site is protected, hence giving additional security.

MEOS offers a variety of highly sensitive outdoor PIRD detectors:
The long distance Passive Infrared Motion sensor PIRD-L provides the newest technology for reliable operation. These models have a coverage range from 1 to 100 and 1 to 150 m touching the practical limits for passive detectors. Microprocessor based controlled differential detectors and temperature compensation provides reliable detection and the significant reduction of false alarms. Due to its small reception angle this model is also suited for perimeter protection.
Each motion sensor is connected to a junction box providing a serial RS485 interface which is used to read the alarm status by the alarm processor inside the main control room. For larger distances (> 3 km) the bus is connected via optical glass fibre to the control room.