2 Pcs Deer Alert for Vehicles,black Deer Whistles Deer Warning

They are made of High-quality plastic.Can resist extreme outdoor temperatures.The self-adhesive won't harm the bumper.The deer whistle is working at the wind speeds above 35 mph,when it working the deer will turn and run away without being harmed.Just remove the adhesive back and affix the deer alert whistles to the front bumper of the vehicle.Not need electricityThe deer whistle wildlife warning devices compatible with all Car,SUV,Truck,Motorcycle and ATV.Save a deerWhen mounted to a vehicle,car or motorcycle moving at 35 mph or faster,the deer whistle makes a sound that alerts deer,moose,elk,antelope,and kangaroos.Place two deer wildlife warning devices on the front bumper of each vehicle.Colour:BlackMaterial:ABSSize:5 x 3.5 x 2cmInstallation:Mounting positions for vehicles must always provide for maximum airflow into the whistle.It should provide for the sound to project out of the warning device toward the animals.Optional Mounting Places:You can mount them on the top of the hood as far forward as possible.Non-Recommended Mounting Locations:Behind grill;in the grill;on the end or sides of bumper;on the inner rim of headlights.Package Contents:2 Pcs x ultrasonic whistles(The whistle has a hole in the tail)2 Pcs x wind whistles(The whistle in the tail without hole)Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.