DHI-ARD1231-W

 12m/90°detecting range/angle
 Pet immunity 18kg
 Bi-directional communication
 Up to 700m transmission distance (open space/no interference)
 Built-in tamper switch
 Wall mount, 2.2~2.5m installation height
 Two level (sensitivity)
 Up to 700m transmission distance (open space/no interference)
 3 years battery life
 ABS plastic