Texecom Premier 360 QD digital ceiling mount detector features an advanced digital design that ensures a maximum false alarm immunity in all environmental conditions, yet still maintains optimum catch performance. With an exceptional specification, the Premier 360 QD is clearly the only choice for all round protection. Featuring a true omni-directional quad element pyro, the Premier 360 QD provides exceptional catch performance for any direction of intruder movement. Other ceiling mount detector normally use a standard dual element pyro. It is only suitable for use in wall mounted PIRs where most of the movement will be across the face of the detector. When dual element pyros are used in ceiling mount detectors, catch performance can decrease because sensitivity is extremely directional dependent. · · · 3.6m maximum mounting height · · 9.3m maximum diameter coverage pattern · · Selectable pulse count · · Sealed optics · · Digital microprocessor technology · · Omni-directional quad element pyro for true 360° coverage · · Digital signal processing · · Digital temperature compensation · · EN 50131-2-2 Grade 2 Class II standards