1. Introduction
The Queenmew H2 Ultrasonic Dog Bark Deterrent Device is designed to help manage excessive dog barking and destructive chewing behaviors. It utilizes safe, dog-friendly ultrasonic sound waves to create a peaceful environment for both pets and owners. This device is suitable for various dog sizes and temperaments, operating automatically once activated.

Image: The Queenmew H2 device is designed for safe and effective dog training without harm, collars, or electric shocks.
Video: An overview of the Queenmew H2 Ultrasonic Dog Bark Deterrent Device, demonstrating its features and benefits for controlling dog barking.
2. Package Contents
Please ensure all items are present in the package:
- 1 x Queenmew H2 Receiver (Main Device)
- 1 x USB Charging Cable
- 2 x Mounting Screws and Anchors
- 1 x User Manual

Image: The Queenmew H2 device and its packaging, illustrating the product as received.
3. Setup and Installation
3.1 Charging the Device
Before first use, fully charge the device. Connect the provided USB cable to the charging port on the side of the device and plug the other end into a USB power source (e.g., laptop, power bank, car charger, or USB adapter). The red light indicates charging, and a blue light indicates a full charge. A flashing red light signifies low battery. The device should not be used while charging.

Image: The device connected via USB for charging, showing the charging indicator light.
3.2 Placement
The device can be mounted on a fence, wall, or tree, or placed near a kennel. Ensure the device faces the direction of the barking. For optimal effectiveness, minimize obstacles between the device and the dog. The device is weatherproof (IP65 rated) and suitable for both indoor and outdoor use, withstanding rain and snow.

Image: Examples of device placement indoors (house) and outdoors (tree, rain), demonstrating its weatherproof design.
4. Operating Instructions
4.1 Power On/Off
Press the 'ON-OFF/MODE' button to power on or off the device.
4.2 Mode Selection
The device features three adjustable ultrasonic frequency modes to accommodate different dog sizes and personalities. Press the 'ON-OFF/MODE' button repeatedly to cycle through the modes:
- 15KHz: Recommended for small or sensitive dogs.
- 20KHz: Recommended for medium or docile dogs.
- 30KHz: Recommended for large or excited dogs.
4.3 Automatic Operation
Once powered on and a mode is selected, the device automatically detects barking within a range of up to 33 feet and emits ultrasonic sound waves to deter the behavior. The ultrasonic waves are inaudible to humans.

Image: Illustration of the three adjustable frequency modes for different dog sizes.
Video: A demonstration of the Queenmew H2 device in action, showing how it deters dog barking.
5. Important Considerations
5.1 Training Period
Each dog has a different learning speed. It may take up to 2 weeks for a dog to adapt to the device's ultrasonic sound. Consistent use is key for effective training.
5.2 Factors Affecting Performance
- Obstacles: Low battery and physical obstacles (e.g., thick walls, dense foliage) can decrease the range and effectiveness of the ultrasonic sound.
- Distance: The smaller the range of ultrasonic penetration, the better the effect.
- Dog's Hearing: The device may not be effective for dogs with hearing problems.
5.3 Not Recommended Scenarios
The device may not be suitable or effective in the following situations:
- Dogs with hearing problems.
- Aggressive or violent dogs.
- Dogs under 6 months or over 8 years old.
- Noisy surroundings that may interfere with detection.
- Environments with too many obstacles.
- For two or more dogs together, as individual training may be more effective.

Image: Scenarios where the device's effectiveness may be limited or not recommended.
6. Maintenance
To ensure the longevity and optimal performance of your Queenmew H2 device:
- Cleaning: Wipe the device with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Water Resistance: The device has an IP65 waterproof rating, making it resistant to splashes and rain. However, avoid submerging it in water.
- Storage: When not in use for extended periods, store the device in a cool, dry place and ensure it is fully charged before storage.
7. Troubleshooting
If you encounter issues with your Queenmew H2 device, consider the following:
- Device Not Activating: Check if the device is powered on and fully charged. Ensure there are no significant obstacles between the device and the barking dog.
- Ineffective Deterrence:
- Verify the selected frequency mode is appropriate for your dog's size and temperament.
- Allow sufficient time (up to 2 weeks) for your dog to adapt to the ultrasonic sound.
- Ensure the device is placed correctly, facing the barking direction, and within the effective range (up to 33 feet).
- Consider if any of the 'Not Recommended Scenarios' apply to your situation.
- Short Battery Life: Ensure the device is fully charged before use. Battery life can vary based on usage frequency and environmental factors.
8. Specifications
| Feature | Detail |
|---|---|
| Product Name | Anti Barking Device X2 |
| Model Number | H2 |
| Input Voltage | 3.7V |
| Battery | 1500mAh Lithium Ion (included) |
| Sensor Distance | Up to 33 feet |
| Ultrasonic Frequency | 15KHz - 30KHz (3 adjustable modes) |
| Item Weight | 7.8 ounces |
| Item Package Dimensions | 5.16 x 4.09 x 1.97 inches |
| Waterproof Rating | IP65 |
| Manufacturer | QueenMew |
| Made In | China |
9. Warranty and Support
The Queenmew H2 Ultrasonic Dog Bark Deterrent Device comes with a 1-year warranty. Additionally, a 30-day unconditional return policy is offered. For product support, troubleshooting assistance, or warranty claims, please contact Queenmew customer service through the retailer's platform or the contact information provided in your product packaging.