Fysho Upgrade Outdoor Anti Barking Device Ultrasonic Dog Bark Controller Sonic Bark Deterrents Silencer Stop Barking Outdoor Anti Bark Control System Pet Dog Supplies (Brown)Category: Sonic PenProduct Description:Item Type:Dog Ultrasonic Anti BarkingMaterial:PlasticColor:Brown,BlackFeature:DurableTarget Audience:DogsModel:CSB19Weight:0.1KGSPackage:Neutral Mail Order BoxSize of Box:8×6.5×5 cm/3.15"*2.56"*1.97"1. Function & Advantages: 1. UPGRADE ULTRASONIC TECH ：stop excessive, noisy dog barking by emitting an ultrasonic sound to silence the dog. More effective than old version deterrents and waterproof. 2.FOR DOGS OF ANY SIZE: Uses high-frequency sound that works to reduce excessive bark of any size dogs within hearing range; 3.HIGHLY FUNCTION： contain sensitive microphone isolates and picks up barking up to 50 feet away to stop barking both outdoors and indoors (recommended starting mode for indoors is level 1, increase if needed). note: does not work on Deaf or hearing Impaired dogs. 4. HUMANE&HARMLESS：100% safe. Safe to your dogs of any size, other pets, Plants, and of course yourself and your loved ones. 5.WELL-DESIGNED MINI SHAPE：Can be hung on a tree, indoor, outdoor wall or fence post to stop any dogs barking(within range); 2. HOW TO WORK : the product looks like an alarm clock, the luxury outdoor ultrasonic barking device can be hung on a tree, anywhere in the house or in your yard, it can be hung, on the table or anywhere else. When the luxury outdoor ultrasonic barking alarm clock detects excessive barking, the microphone will respond to barking and activation parts. At this time, the product will send out a safe high pitch ultrasonic sound, and the dog can hear it, but no one can hear it. The dog is stimulated by the sound and will stop barking. Because ultrasound can make dogs feel sick, dogs will stop barking.3. 4 level operation: OFF - for saving batteries,Test - to verify the functions of the microphone and the speaker,Low Sensitivity - short range monitoring (15 feet),Medium Sensitivity - (up to 30 feet),High Sensitivity - (50 feet)4. Design: there are 3 files of sensitivity (effective range from 4.5,9 to 15.24 m), and a test file. And the battery life expectancy is 2 months(the two color indicator shows sufficient electricity). The outdoor ultrasonic barking device has a power indicator. When you leave, it can be set to "Off" to protect the battery.Designed for outdoor use, outdoor ultrasonic barking device5.Note: it needs 9 V batteries - (batteries are not included), a sound sensitive microphone: triggering ultrasonic sound.Package Include:1 x training dog deviceNotes:1. Please allow 1-3 cm difference due to manual measurement and 3-5 g for the difference between different colors.2. Due to the screen difference, the color may be a little difference from what you expect, please allow it.