The Aritech VE1120 20m PIR Volumetric Detector boasts Vector Enhanced Motion Sensors (VE series) with advanced optics, ensuring precise detection and superior performance. The unique optical mirror technology employs a step and gliding focus feature, creating 11 continuous curtains for maximum coverage density up to 200 feet. The patented Vector pyro not only detects thermal sources but also determines the motion direction across the surveillance area. Chime mode, when activated, triggers an alarm for specific motion directions. With advanced mirror optics and Vector pyro, VE series sensors offer exceptional PIR technology, enhancing sensitivity while minimizing false alarms. The Vector Verified Enhanced (V2E) signal processing identifies and filters out stationary and non-thermal sources, preventing false alarms. Key features include under-crawl detection, easy plug-in electronics, and tamper-resistant design.