WLPIRDX - Passive Infrared Sensor
datasheetprice each: $120  
Specifications
Dimensions 3.2" L x 1.75" W x 4.4" H (81x44x112mm)
Power One 9V alkaline battery (supplied)
Current Consumption 15 mA transmitting, 4 mA walk test, 8 ľA standby, 15 ľA timer mode
Battery Life three years(typical)
Battery Saver Timer 4-minute software timer, rearms after alarm transmission
Measured Range 700 feet in open air, one quadrant. 500 feet minimum in open air (four quadrant test)
Acessories mounting hardware, including screws, double-stick tape
Code Outputs alarm, low battery
Detector balanced dual element, pyroelectric
Installed Lens standard Fresnel lens, 24 facets, 9 main, 8 intermediate, 5 short, 2 creep
Detection Pattern 30 feet x 30 feet
PIR Sensitivity preset, non-adjustable, pulse count of 3 with 8-second detection window
Operating Frequency 315Mhz