Scantronic DET-WPIR-00 Wired PIR Detector | 15m Range with Temperature Compensation | Grade 2

FAQs

What is the coverage area of the DET-WPIR-00?

The DET-WPIR-00 provides comprehensive motion detection coverage with a 15-meter maximum range and 90-degree horizontal viewing angle. The detection field is divided into 54 individual zones, creating a precise detection pattern that monitors the protected area effectively. The detection range is adjustable from a minimum of 1.5 meters to the full 15 meters, allowing installers to customize coverage based on room size and layout. This multi-zone detection pattern ensures that movement across the protected area will trigger at least one, and typically multiple zones, providing reliable detection while the segmented approach helps distinguish between genuine intrusions and potential false alarm sources.

What is adaptive temperature compensation and why is it important?

Adaptive temperature compensation is an intelligent feature that automatically adjusts the detector’s sensitivity based on ambient temperature conditions. PIR detectors work by sensing the temperature difference between a moving warm body (typically around 37°C for humans) and the background environment. In warm conditions where room temperature approaches body temperature, this differential decreases, potentially reducing detection effectiveness. The DET-WPIR-00’s adaptive compensation continuously monitors ambient temperature and adjusts sensitivity accordingly, ensuring reliable detection performance even when room temperatures are elevated due to heating systems, warm weather or inadequate ventilation. This technology is particularly valuable in commercial environments, conservatories, or properties in warm climates where temperature variation can significantly impact standard PIR detector performance.

How does the dual sensor configuration reduce false alarms?

The DET-WPIR-00 incorporates dual low-noise pyroelectric sensors that both must trigger within a specified timeframe for the detector to generate an alarm signal. This dual-sensor requirement significantly reduces false alarms caused by electrical interference, radio frequency noise, sudden lighting changes, or small animals that might only trigger one sensor element. The dual sensor approach provides enhanced discrimination between genuine human movement (which will typically trigger both sensors as the person moves through multiple detection zones) and transient events or electrical noise that might affect only a single sensor. Combined with the excellent RF immunity design, this dual sensor configuration makes the DET-WPIR-00 particularly suitable for electrically noisy commercial environments or locations with potential sources of electrical interference.

What is the difference between Environmental Class II and other classifications?

Environmental Class II rating (as defined in EN50131-1 security standards) indicates the detector is designed for indoor use in environments where temperature and humidity are not necessarily controlled. Class II devices must operate reliably across temperature ranges from -10°C to +40°C (or wider, as the DET-WPIR-00 operates from -20°C to +50°C) and relative humidity up to 95% non-condensing. This classification makes the detector suitable for unheated spaces such as garages, outbuildings, warehouses, and commercial premises where environmental conditions may vary significantly. The Class II rating is more robust than Class I (which is limited to +5°C to +40°C) but not as stringent as Class III (outdoor) or Class IV (extreme outdoor conditions). For most residential, commercial and office installations, Class II provides an ideal balance of environmental tolerance and cost-effectiveness.

Is the DET-WPIR-00 suitable for professional security installations?

Yes, the DET-WPIR-00 is certified to EN50131-2-2 Grade 2 intrusion detection standards, making it suitable for professional security installations in low to medium risk applications. Grade 2 certification indicates the detector meets requirements for residential and small commercial premises where intruders are assumed to have limited knowledge of alarm systems and will use simple tools. The certification confirms the detector provides adequate performance, reliability and resistance to tampering for professional security applications. The device’s excellent RF immunity, dual sensor configuration, adaptive temperature compensation and wide operating temperature range make it appropriate for professional installations where reliable performance and minimal false alarms are essential. Security professionals can confidently specify the DET-WPIR-00 for Grade 2 applications knowing it meets European security standards.

What voltage and current does the detector require?

The DET-WPIR-00 operates on 9-18V DC power supply, making it compatible with most standard security system control panels which typically provide 12V DC auxiliary power outputs. The wide voltage range provides tolerance for voltage drops in long cable runs and ensures reliable operation even with slight variations in supply voltage. Current consumption is very low at less than 12mA, meaning multiple detectors can be powered from a single control panel auxiliary output without exceeding typical power budget limitations. The low current draw also minimizes voltage drop issues in extended cable runs and reduces heat generation within the detector enclosure. Installers should verify that the control panel’s auxiliary power output can supply adequate current for all connected devices and that cable gauge is appropriate for the installation distances involved.

Can the detection range be adjusted?

Yes, the DET-WPIR-00’s detection range can be adjusted from a minimum of 1.5 meters to the full 15-meter maximum range. This adjustability allows installers to customize coverage based on the specific protected area size and layout. In smaller rooms, reducing the detection range prevents the sensor from monitoring beyond walls into adjacent spaces, which could cause unwanted alarms from movement in adjoining rooms. In larger spaces, the full 15-meter range provides comprehensive coverage. Range adjustment is typically performed during installation by configuring detection sensitivity settings or using range-limiting accessories. The 54-zone detection pattern ensures that even with adjusted range settings, coverage remains comprehensive across the horizontal 90-degree field of view, maintaining effective protection while preventing monitoring of unintended areas.