Dickno 4 PCS Deer Whistles for Car, Automotive Deer Warning Whistle Devices, Animal Warning Devices Avoids Collision, Universal Animal Alert Accessories for Vehicles (Black)

【Increase Safety】: The deer warning device is very important for those residing in rural areas. It's powered by wind. The perforated whistle will emit a loud whistle by the wind, which can alert deer approaching vehicles, effectively avoiding collisions cause accident.

【Dual Construction】: The deer alarm automatically emits ultrasonic waves at speeds of more than 35 miles per hour during the day or night and alerts from a quarter mile away. In addition, the sound waves generated by the device's air are almost inaudible to the people and pets in the car.

【Quality Material】: The dual structure deer warning whistle is made of ABS plastic material, waterproof and durable. It can also withstand outdoor extreme temperature. It works even in very hot and cold weather conditions. The whistle is self-adhesive, which makes it more stable and won't damage your car paint.

【Installation】: Clean and dry the surface before installation, remove the tape on the back and press firmly for 30 seconds, and the installation is complete. You can attach the whistle to the grille, front bumper, mirror, or any flat spot on the vehicle.

【Universal Fit】: Each deer alarm device is 2×1.6×0.87 inches in size and comes with 2 or 4 whistles per pack. These deer whistles are universally designed to be compatible with cars, SUVs, trucks, motorcycles, ATVs, and more.