The Outdoor Ultrasonic Bark Stopper is designed for outdoor use and is and waterproof. There are 4 sensitivity levels (effective range of 4.5, 9 to 15.24 meters), as well as a test level. The Outdoor Ultrasonic Bark Stopper has a power indicator light that can be set to "off" to protect the battery when you are away. Excessive barking of dogs affects you and your neighbors. The Outdoor Ultrasonic Bark Stopper effectively stops dogs from barking without the need for a receiving collar. Safe and effective, suitable for dogs of all breeds and sizes. The product can remotely activate the ultrasonic sound using a remote control, and the remote control is effective up to 15 meters away. The Deluxe Outdoor Ultrasonic Bark Stopper is designed like an alarm clock and can be hung on a tree, anywhere in or yard, on a table or anywhere else. When the Deluxe Outdoor Ultrasonic Bark Stopper alarm detects excessive barking, the microphone senses the barking and activates the component. At this time, the product emits a safe high-pitched ultrasonic sound that dogs can hear but people cannot hear. Dogs stop barking when stimulated by the sound. Because the ultrasonic sound makes dogs feel uncomfortable, dogs stop barking. Waterproof rating: IP45 Colour:Black Material:ABS Package Contents: 1 x bark stopper 1 x charging cable 1 x remote control Only the above package content, other products are not included. Note: Light reflection 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.