1. Introduction
This manual provides detailed instructions for the safe and effective use of your Heaflex D8 Dog Training Collar. This system is designed to assist in training dogs of all breeds and sizes, offering multiple modes to reinforce desired behaviors and correct unwanted ones. Please read this manual thoroughly before initial use.
2. Safety Information
- This device is intended for dog training purposes only. Do not use on aggressive dogs or for any other purpose.
- Ensure the collar is properly fitted to prevent skin irritation. Avoid leaving the collar on your dog for more than 12 hours per day.
- Regularly check your dog's neck for signs of irritation or sores. If irritation occurs, discontinue use until the skin heals.
- The remote control is not waterproof. Keep it dry to prevent damage. The receiver collar is IPX7 waterproof.
- Keep out of reach of children.
3. Package Contents
The Heaflex D8 Dog Training Collar system includes the following components:
- Remote Transmitter
- Receiver Collars (Quantity: 3 for this model)
- Adjustable Nylon Straps
- USB Charging Cable
- Test Light Tool
- Contact Points (Short and Long)
- User Manual (this document)

Image: Overview of the Heaflex D8 Dog Training Collar system, showing the remote transmitter and three receiver collars with green, red, and black striped straps.
4. Product Overview
4.1 Remote Transmitter
The remote features an LED display and buttons for controlling the various training modes and intensity levels. It also includes an LED light for visibility in low-light conditions.

Image: The remote transmitter with its display showing channel selection and mode indicators. Three receiver collars are visible, indicating multi-dog support.
4.2 Receiver Collar
The receiver collar is designed to be lightweight and comfortable for your dog. It is IPX7 waterproof, allowing for use in various weather conditions and during water activities. The collar strap is adjustable to fit dogs weighing 5-120 lbs with neck sizes from 6-27 inches.

Image: A visual representation of different dog sizes, illustrating the wide adjustability of the collar to fit various breeds and weights.
5. Charging the Devices
Both the remote transmitter and receiver collars are rechargeable. Use the provided USB charging cable to charge them.
- Connect the charging cable to the charging port on the remote and receiver.
- Plug the USB end into a compatible USB power source (e.g., computer, phone charger, power bank).
- A full charge takes approximately 2.5 hours.
- The receiver has a standby time of up to 35 days, and the remote up to 45 days.

Image: The remote and receiver collar being charged via a USB cable, highlighting the convenience of USB charging.
6. Fitting the Collar
Proper fit is essential for the collar's effectiveness and your dog's comfort.
- Place the receiver collar around your dog's neck so that the contact points are underneath, touching the skin.
- Adjust the strap to be snug, but not too tight. You should be able to fit two fingers comfortably between the strap and your dog's neck.
- If your dog has thick fur, you may need to trim the fur around the contact points or use the longer contact points provided to ensure proper skin contact.
7. Setup & Operation
7.1 Pairing Remote and Receiver
The remote and receiver collars are typically pre-paired. If re-pairing is needed:
- Turn on the remote transmitter.
- Press and hold the power button on the receiver collar until the LED light flashes.
- Within 10 seconds, press a channel button (CH1, CH2, or CH3) on the remote. The receiver's LED will flash rapidly, then stay solid, indicating successful pairing.
7.2 Training Modes
The Heaflex D8 offers four distinct training modes:
- Beep Mode: Delivers an audible tone. Often used as a warning or for positive reinforcement.
- Vibration Mode: Provides a gentle to strong vibration. Intensity levels 1-99.
- Static Shock Mode: Delivers a safe, adjustable static stimulation. Intensity levels 1-99. Use with caution and only when necessary.
- LED Light Mode: Activates an LED light on the receiver for visibility in the dark.

Image: The four working modes of the Heaflex D8 collar are displayed: Tone, Vibration (1-99 Level), Shock (1-99 Level), and LED Light.
7.3 Using the LED Light
The remote features a built-in LED light, useful for nighttime walks or locating your dog in low-light conditions.

Image: The remote's built-in LED light is shown being used to illuminate a dog in a dark setting, aiding visibility.
7.4 Maximized Training Range
The Heaflex D8 system offers an effective control range of up to 2600 feet (approximately 875 yards) in unobstructed environments, allowing for flexible training in various outdoor settings.

Image: A dog in an open outdoor area, illustrating the extensive 2600ft effective control range of the training collar.
7.5 Official Product Video
Video: An official product video from Heaflex demonstrating the features and benefits of the dog training collar, including its waterproof design and various training modes.
8. Maintenance
- Clean the receiver collar and contact points regularly with a damp cloth. Ensure they are dry before storage.
- Store the device in a cool, dry place when not in use.
- Periodically check the charging ports for debris.

Image: The IPX7 waterproof rating of the receiver collar is highlighted, showing a dog near water, suitable for all-weather training.
9. Troubleshooting
9.1 Collar Not Responding
- Check if both the remote and receiver are powered on.
- Ensure the devices are fully charged.
- Verify that the remote and receiver are properly paired to the correct channel.
- Confirm that the collar is within the effective range (up to 2600ft).
9.2 Static Shock Not Felt
- Ensure the contact points are making proper skin contact. Adjust the collar or use longer contact points if necessary.
- Use the provided test light tool to confirm the static shock function is working.
- Increase the static shock intensity level on the remote.
9.3 Skin Irritation
- Remove the collar immediately.
- Clean your dog's neck and the collar thoroughly.
- Allow the skin to heal completely before reintroducing the collar. Consider using a different collar type or consulting a veterinarian.
10. Specifications
| Brand | Heaflex |
| Model | D8 |
| Training Modes | Beep, Vibration (1-99 levels), Static Shock (1-99 levels), LED Light |
| Range | Up to 2600 ft (unobstructed) |
| Waterproof Rating (Receiver) | IPX7 |
| Remote Waterproofing | Not waterproof |
| Battery Type | Lithium Polymer (included) |
| Charging Time | Approx. 2.5 hours (USB) |
| Standby Time (Receiver) | Up to 35 days |
| Standby Time (Remote) | Up to 45 days |
| Adjustable Collar Size | Fits dogs 5-120 lbs, neck sizes 6-27 inches |
| Material | Nylon |
| Item Weight | 15.2 ounces |
11. Warranty & Support
Heaflex is committed to customer satisfaction. This product comes with:
- 6-Month Return Policy: For hassle-free returns.
- 24-Month Warranty: Covers manufacturing defects.
- Lifelong Professional Support: Access to customer service for assistance with product use or issues.
For support, please refer to the contact information provided on the Heaflex official website or your purchase documentation.



