Optex, outdoor detector with dual PIR + anti-masking and range of 24x2m ready for wireless (you need to place a transmitter yourself). The HX-40, very reliable outdoor detector with advanced detection technology. The detector can be installed between 2.5 and 3m height, has various settings for adjusting the sensitivity to all conditions. The detecting portion is provided with SMDA logic and can be rotated 180° for optimal detectie. Technology: 2 x PIR + Anti mask