Under EN 50131-2-x, Grade 3 detectors are required to be able to detect masking materials such as, white polystyrene foam, a black paper sheet, a 2mm thick aluminium sheet, self-adhesive clear vinyl, a 3mm thick acrylic sheet, a plastic skin and clear lacquer at a distance of 50mm.

Using a patented Active Infrared Anti-Masking feature, UTC Fire & Security's detectors can identify all of these types of sophisticated masking attempts and send a masking signal to the control panel.

Patented Active Infrared Technology

UTC Fire & Security's innovative use of Active Infrared (AIR) and light guides enables the AIR to fully protect both the PIR and Microwave technologies, ensuring that not only are the most sophisticated masking attempts automatically reported to the control panel, but also that the detector is operating correctly.