DIY, easy to use, low cost Safe&reliable, interference free System uses Doppler Radar technology Doppler Radar sens

      Key Specifcation:

DIY, easy to use, low costSafe & reliable, interference freeSystem uses Doppler Radar technologyDoppler Radar sensor will be able to detect motion inside or balconyoutside.Minimize fault alarm from vibration and heavy rain20 zones20 voice/light sirensBack battery for main frame and sirens

Microwave Human Motion Sensor House Alarm