The new generation of OPTEX VXS keeps the same features as the VXI series by improving detection with digitally enhanced signal recognition logic called SMDA By analyzing detection patterns and environmental information, SMDA improves immunity against various noise factors such as climate changes and vegetation and can distinguish the cause of false alarms and genuine invasions.Wired motion detector with Antimasking. Detection of 2 pyroelectric elements with antimasking function, 12m range and 90 angle. Mounting height 0.8-1.2m. Detection speed: 0 3~2m/sec. Sensitivity: 2.0°C@0.6m/s Features 5 levels of distance adjustment and SMDA logic to avoid false alarms Uses NO/NC temperature compensation circuit. Operating voltage: 9.5-18VDC, 24mA consumption. It has a Back Tamper. IP 55. Operating temperature: -20ºC ~+60ºC Possibility to change color with additional cover