Function Warns wildlife away from you, only animals can hear the alert Hardware Includes self-adhesive tape on bottom or mount with screws Unit & Package Sold by pair, carded for display Part No. Description 81990 Black 81991 Chrome Part No. & Image Selection Ultrasonic Animal Alert Part No.: -- Please Select -- 81990 81991 Combination of product variants is not available Updating... Related Products Standard Rear Hubdometer Caps Flat Top Hex Chrome Plastic 33mm Screw-On Lug Nut Cover 5th Wheel Pin Pullers Universal Front Hub Cap in Pinwheel Design Plain 2-Hole License Plate Frames with Center Raised Stainless Steel Two Piece Rear Light Bars with 4″ (8) Round Lights