The HX-40/40AM is a high mount outdoor detector. By utilizing unique pyro-elements, the HX series achieves highly reliable detection performance against false and missed alarms. It provides a multiple detection pattern area, with 94 high density detection zones and an accurate discrimination function to spot temperature changes of moving objects. The original dual signal processing circuit automatically adjusts its sensitivity as environmental conditions require. This can provide stable and accurate detection in outdoor severe environmental conditions. The HX-40AM provides digital anti-masking function. According to ongoing environmental changes, it can regularly make automatic optimization adjustments.