How the Scarecrow Sprinkler Works

The Scarecrow protects any open area of the garden or yard that receives the unwanted attention of animals. Its sprinkler directs water accurately up to 10 m (35 feet), protecting a 90 square meter (1000 sq. ft.) area. The Scarecrow can see large animals farther away than it can small animals.
The Scarecrow uses a passive infrared sensor to see the temperature difference between an animal and the background. However, if the animal and the background are similar temperatures the Scarecrow will have difficulty detecting movement.When an animal or person moves into the field of view, the scarecrow motion sprinkler notices the change and opens an electronic valve to release a 3 second burst of water through the sprinkler. The Scarecrow then pauses for 8 seconds before resuming sensing. This pause creates an element of randomness and unpredictability preventing animals from becoming used to the device.

Remark; Animals like rabbits, cats and squirrels may cross under the sensor alleys. The motion activated sensor will eventually see them. Larger animals and people are seen the easiest.

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