I. Demand Analysis:

Navigation marks are indispensable guiding signs during ship navigation, providing safety information for various water activities. In recent years, many birds have chosen to perch and forage on navigation mark vessels. Bird droppings block and corrode the solar panels on the marks, significantly reducing charging efficiency, which in turn affects the normal operation of the navigation marks and adds extra workload to their management and maintenance. The Zhen Bird Repellent specialized bird repellent for navigation marks, model ZQN-DZ-HBQ, can keep birds away from the marks and prevent contamination from droppings.

II. Working Principle:

The device emits variable-frequency ultrasonic waves above 20,000 Hz, which interfere with and stimulate the auditory systems of birds, causing them to actively avoid the navigation marks. Additionally, the bird repellent mimics the sounds of natural predators and some sudden audio signals, making birds alert and reluctant to approach.

To further enhance the bird-repelling effect, the device employs three random methods: random playback order, random playback intervals, and random playback frequencies. This unpredictability makes it difficult for birds to anticipate and adapt to the ultrasonic waves, effectively preventing habituation.

III. Functional Features:

1. The design of the bird repellent fully considers its impact on the navigation marks themselves. After installation, it does not obstruct the lights of the marks nor interfere with their normal functions.

2. The device's housing is made of high-quality stainless steel, offering excellent waterproof, moisture-proof, and anti-corrosion properties.

3. The power supply method, combining a battery with a solar panel, ensures continuous operation in outdoor environments, guaranteeing the persistence and stability of the bird-repelling effect.

IV. Technical Parameters:

1. Battery: 12V 2Ah

2. Static battery current: <30mA

3. Solar panel: 20W

4. Ultrasonic sound pressure: >110dB

5. Voice speakers: 2

6. Voice sound pressure: >110dB

7. Effective radius: 20m

8. Operation time without light: approximately 7 days

9. Ambient temperature: -40°C to 85°C

10. Weight: 6kg

11. Dimensions: 300*300*400

12. Protection rating: IP65

For installation cases and pricing inquiries, please contact Ms. Zou from Shenzhen Zhen Bird Repellent.