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 Vinyl Shift Boot Covers Large Rosewood Screw-In Air Valve Control Knobs with Iron Cross Chrome Plated Steel Double Light “L” Shape Mounting Brackets with 2″ Sealed Lights Dome Light Lens Adapter/Grommet for Peterbilt Headlight Visor 7.5″ (L) x 2.25″ (W) Side Type Screw LED Light