Passive volumetric 86º via radio detector with Learn Mode technology. Supervised every 17 minutes. Mirror optics. 9 curtains of 16m. Installation height: 1.8 to 3m. Immune to false alarms. Frequency 433Mhz (63 bit). Outdoor range: 400m. Working temperature: -18ºC to 55ºC. Power supply with a high capacity 3.6Vdc lithium battery of 5 years. Dimensions: 103x71x51mm. Grade 2.