The AQUA Plus is a digital passive infrared (PIR) detector meeting EN-50131 Grade 2 requirements.It features a dual-element PIR sensor and a fully digital motion detection algorithm for high sensitivity and interference immunity through two-track signal analysis and temperature compensation.Its interchangeable Fresnel lens and three-step sensitivity control allow customisation for various user needs.The detector includes a built-in tamper switch for enclosure protection and EOL resistors on the PCB for simplified installation. An adjustable mounting bracket is also included.