How It Works

Discover the science behind our solar-powered ultrasonic deer repellent. Advanced technology creates an effective, humane barrier that deer naturally avoid.

25kHz Ultrasonic
Science-Based
100% Humane

The Complete Process

From detection to deterrence in under half a second

Motion Detection

PIR sensor detects deer movement

Key Features:

  • Passive infrared (PIR) technology detects body heat differences
  • 110° detection angle covers wide area
  • 30-foot detection range optimized for deer size
  • Response time under 0.5 seconds for immediate activation

The PIR sensor uses pyroelectric material that generates electrical signals when infrared radiation (body heat) changes within its field of view.

Ultrasonic Emission

25kHz frequency disrupts deer behavior

Key Features:

  • Frequency specifically calibrated for deer hearing sensitivity
  • Sound pressure level: 90-100 decibels at source
  • Inaudible to humans (hearing range typically 20Hz-20kHz)
  • Variable frequency prevents habituation

Deer hearing range extends to 30kHz, making 25kHz frequency uncomfortable but not harmful, similar to how high-pitched sounds affect humans.

LED Flash Deterrent

Bright light adds visual intimidation

Key Features:

  • High-intensity white LED creates startling effect
  • Particularly effective during dawn/dusk feeding times
  • Flash duration 2-3 seconds to maximize impact
  • Combined with ultrasonic for multi-sensory deterrent

Sudden bright light triggers deer's flight response, as it simulates potential predator presence or human activity.

Solar Power System

Continuous operation without maintenance

Key Features:

  • 6V/2W polycrystalline solar panel
  • 2000mAh lithium-ion battery backup
  • Intelligent power management optimizes battery life
  • Works even during extended cloudy periods

Advanced MPPT (Maximum Power Point Tracking) ensures optimal energy harvest from solar panel under varying light conditions.

The Science Behind the Technology

Research-backed principles ensure maximum effectiveness

Why 25kHz Frequency?

Research shows deer hearing is most sensitive between 1-30kHz, with peak sensitivity around 8-16kHz. Our 25kHz frequency is high enough to be uncomfortable for deer while remaining completely inaudible to humans. This frequency creates an 'acoustic barrier' that deer naturally avoid.

Human hearing: 20Hz - 20kHz
Deer hearing: 0.25Hz - 30kHz
Optimal deterrent range: 20-25kHz
Sound travels 343 meters per second

Key Insight

Optimal frequency selection based on deer auditory research

Motion Detection Science

PIR sensors detect changes in infrared radiation (heat signatures). When a deer enters the detection zone, its body heat contrasts with the background temperature, triggering the sensor. The 110° angle and 30-foot range are optimized for deer body size and typical approach patterns.

Detection angle: 110 degrees
Range: Up to 30 feet
Trigger sensitivity: ±2°C temperature difference
Response time: <0.5 seconds

Key Insight

PIR technology provides reliable, weather-resistant detection

Solar Efficiency

The 6V/2W solar panel generates enough power to operate the device continuously. Even with just 4 hours of sunlight, the system can run for 7+ days. The 2000mAh battery provides backup power for extended cloudy periods or winter conditions.

Panel efficiency: >18%
Daily energy need: ~0.5Wh
Battery capacity: 7.4Wh
Cloudy day operation: 30+ days

Key Insight

Advanced power management ensures continuous operation

Proven Effectiveness

Multiple factors contribute to 95% success rate

Frequency Targeting

95%

25kHz frequency specifically chosen for deer auditory sensitivity

Multi-Modal Deterrent

92%

Combination of sound, light, and motion creates comprehensive barrier

Immediate Response

88%

Sub-second activation prevents deer from becoming comfortable

Consistent Operation

94%

Solar power ensures 24/7 protection without maintenance

Compare Deer Control Methods

See why ultrasonic technology is the superior choice

MethodEffectivenessMaintenanceProsCons
Chemical Repellents60-70%High
  • Easy to apply
  • Immediate coverage
  • Wash off in rain
  • Need frequent reapplication
  • Chemical exposure
  • Expensive ongoing cost
Physical Fencing95%Medium
  • 100% physical barrier
  • Permanent solution
  • High installation cost
  • Blocks views
  • Maintenance required
  • Not practical for large areas
Ultrasonic RepellentRECOMMENDED90-95%Very Low
  • Humane and safe
  • Zero ongoing costs
  • Weather resistant
  • Covers large areas
  • Initial setup required
  • Needs clear line of sight

Experience the Science in Action

Advanced ultrasonic technology, solar power, and smart sensors work together to create the most effective and humane deer control solution available.

Science-Based Design
100% Humane
95% Effective