product manual:

The appearance of this product is designed like an alarm clock. The outdoor ultrasonic bark suppressor can be hung on a tree, anywhere in the house or in your yard, it can be hung, placed on a table or other places at will. When the luxury outdoor ultrasonic bark arrester alarm clock detects excessive barking, the microphone will sense the bark and activate the component. At this time, the product will emit a safe high-pitched ultrasonic sound that can be heard by dogs but not by humans. The dog will stop barking when stimulated by the sound. Because ultrasound will make the dog feel uncomfortable, the dog will stop barking.

Designed for outdoor use, the outdoor ultrasonic bark arrester is durable and waterproof. There are 3 levels of sensitivity (the effective range is between 4.5, 9 and 15.24 meters), and a test level. A 9-volt battery is required (not included), and the average battery life is 2 months. The outdoor ultrasonic bark arrester has a power indicator, which can be set to "Off" to protect the battery when you are away.

The use period is limited, and the warranty period is one year. Excessive barking of dogs can affect you and your neighbors. The outdoor ultrasonic bark suppressor can effectively stop the dog from barking and does not require a receiving collar. Safe and effective, suitable for dogs of all breeds and sizes.

Description: 
Material: ABS plastic
Color: Black
Product certificate: CE / RoHS FCC
Size: 16.5 * 15.5cm

Characteristic:
*Use ultrasound to stop dogs barking
*Effective range 50 feet
*Durable and waterproof
*Two color indicator light shows whether the power is sufficient
*9 V battery - (battery not included)
*Microphone sensitive to sound: trigger ultrasonic sound.
*Low sensitivity - short distance monitoring (15 feet)
*Medium sensitivity - (up to 30 feet)
*High sensitivity - high sensitivity (50 feet)

Package : 1 *Barking Silencer

Pet Dog Ultrasonic Anti-Barking Silencer – Outdoor Bark Deterrent Trainer

Product Overview

The Pet Dog Ultrasonic Anti-Barking Silencer is a humane and effective solution designed to address excessive barking in dogs. Utilizing ultrasonic technology, this device emits a high-pitched sound that is unpleasant to dogs but inaudible to humans, discouraging unwanted barking behaviors. Ideal for both pet owners and those dealing with neighborhood noise, this device offers a peaceful and non-invasive method to manage canine noise disturbances.

Key Features

Humane Training Method

The device operates by emitting ultrasonic sound waves that are discomforting to dogs but harmless. This method encourages dogs to associate barking with an unpleasant experience, leading to a reduction in excessive barking over time.

Adjustable Sensitivity and Range

Equipped with adjustable sensitivity settings, the device can be tailored to detect barking from varying distances and volumes. This customization ensures that the device responds appropriately to your dog's barking habits.

Rechargeable and Weather-Resistant

Many models come with rechargeable batteries, offering convenience and cost savings. Additionally, the weather-resistant design allows for both indoor and outdoor use, making it versatile for various environments.

Safe for Humans and Dogs

The ultrasonic sound emitted by the device is inaudible to humans, ensuring that it does not cause discomfort to people nearby. It is also safe for dogs, as it does not involve any physical contact or harmful substances.

Benefits

• Effective Bark Control: Significantly reduces excessive barking by addressing the root cause without the need for physical punishment.
  
• Non-Invasive: Provides a gentle approach to training, avoiding the use of shock collars or other aversive methods.
  
• Convenient and Cost-Effective: Rechargeable batteries and durable construction reduce the need for frequent replacements, offering long-term savings.
  
• Versatile Application: Suitable for various settings, including homes, yards, and public spaces, to manage barking in different environments.

How It Works

When the device detects barking within its range, it emits an ultrasonic sound that interrupts the dog's behavior. Over time, the dog learns to associate barking with the unpleasant sound and reduces the behavior accordingly. It's important to note that effectiveness may vary depending on the individual dog and the consistency of training.