Risco, ceiling detector PIR MW 10.525 GHz, range 360° x 12m, Anti mask, mounting height of up to 4m. High security dual detector PIR MW 10.525GHz with 360° x 12m Anti mask - height of up to 4m. The combination of advanced detection capabilities and slim design make it attractive in that this detector can be used in any type of installation. The detector uses a special 110° spherical lens that provides full 360° coverage.