The unit covers a 80ft x 6ft (24m x 2m)area. Conventional outdoor passive infrared detectors often produce false alarms caused by sunlight. But the LX-802N employs Double Conductive Shielding which resists more than 50,000 lux of sunlight (e.g. during sunrises and sunsets). This provides highly stable performances, while allowing the units to be used in many different applications Click Here to See Detection Patterns Patented Double Conductive Shielding Double filtering and conductive metal shielding of the Pyro blocks out visible light and RFI. This allows only infrared energy to reach the pyroelectric elements. Realiable Performance Temperature Compensation Circuit Automatically adjusts the detection sensitivity according to the environmental temperature. Selectable Detection Patterns Multi-level or Pet Alley detection patterns can be selected by sliding the PCB and flipping the mirror. Area Masking Strips (LX-40 Only) Unwanted detection areas can be easily eliminated by attaching supplied masking strips. Selectable Sensitivity Selectable Pulse Count: 1 or 2 Day or Night Mode Form C Relay Output Design Durability Highly Durable and Heat Resistant Housing and Lens High Grade UV-Resistant Lens Stainless Steel Screw Applications Activation of CCD camera, light, siren, and/or other devices Front and/or backyard alongside fences, garage / parking lots, delivery door, etc. Model LX-802N Detection Method Passive Infrared Coverage 80ft x 6ft (24m x 2m) long range Detection Zones Multi-Level Area: 12 zones Pet alley area: 4 zones Mounting Normal Area: 8.3ft (2.5m) max. Pet alley area: 4 ~ 5ft (1.2 ~ 1.5m) Detectable Speed 1 ~ 3.3ft/sec. (0.3 ~ 1.0m/sec) Sensitivity Adjustment Selectable 3 position (H,M,L) LED Indicator LED lights on during detection Alarm Period 2.0 ± 1sec. (Delay timer) Alarm Output NC. NO 28V DC 0.2A Max Tamper Switch Opens when cover removed. Pulse Count "2" position: 2 (20 ± 5 sec.) "TEST" mode: 1 pulse Photocel Adjustment Day to night mode (Approx. 10 to 100,000 lux) Warm-up Period Approx. 60 sec. Power Input 12VDC ± 10% Current Draw 25mA max. Installation Place Indoor or outdoor on the wall Operating Temperature -4°F ~ +122°F (-20°C ~ +50°C) Environment Humidity 95% max Weight 5.3oz (150g)