• Microwave using X-Band patch antenna • Waterproof function for outdoor environment IP55 • Pet immunity 20kg • Full-sealed, pest immunity • Using Doppler effect and energy analysis • Special optical filter lens, white light immunity 10000 Lux • Temperature auto-compensation, avoiding false alarm • Microwave detection range adjustable • Pulse count optional • LED on/off optional • Alarm output N.C./N.O. optional