1.With infrared , microwave and intelligent software, SMD technology 2.Anti-EMI RFI interference, effectively prevent mistake ... Detail:1-3daysSpecifications1.With infrared and microwave , intelligent software to effectively prevent false alarm2.Microwave sensitivity adjustable3.Looking ... .Alarm indicator open/close for choice6.Use SMD technology , anti-EMI RFI interference SK-135 pet immune ...