F900Plus Troubleshooting Tips

Signal Issues

Signal issues with the fence function

1. If your usage environment is open, such as on a lawn, our product signal will generally remain stable, even when set to a maximum radius of 120 feet.

2. In environments with dense forests, tall trees, or extensive metal mesh and walls, our product may experience signal blind spots within a range of 80-120 feet, potentially leading to signal loss. However, this does not affect normal usage. By placing the transmitter strategically (away from these areas) and planning boundaries, these issues can be mitigated effectively.

3. Our product does not issue any punishment warnings when there is no signal, ensuring the safety of your dog. Please use it with confidence.

4. Temporary signal loss may occur due to occasional interference, but this does not impact product functionality.

5. The test mode is primarily for signal testing purposes. It emits a sound alert when the signal is lost. When using it normally for your dog, ensure it is switched to the working mode. This ensures that warnings and punishments are issued only when your dog crosses the boundary.

6. Occasionally, signal drift may occur due to interference, but rest assured, this is usually brief and momentary. Our built-in algorithms adjust boundaries appropriately in such cases, ensuring there are no erroneous warnings or punishments for your dog.

7. Even if the signal is poor in some areas within the fence, you can use it with confidence as long as the signal at the set boundary location is normal.

What causes signal interruption?

Exceeding the range of 10-120FT or encountering interferences like Wi-Fi can cause signal interruption. It's advised to test for signal stability before use.

What are typical obstacles that can interfere with the signal?

Wireless devices such as Wi-Fi and Bluetooth can cause signal interference.

 Strong electromagnetic fields, multipath effects, changes in weather, and physical barriers can affect the signal's strength and stability.

Warning Mode

I have successfully paired the device, but the warning mode is not working?

During normal use, please switch to working mode. So please check if it's working mode. If not, please switch to it.

1. Test Mode: This mode is only for testing if the signal is normal. In case of signal loss, both the transmitter and the receiver will emit a beeping alert, which has nothing to do with the boundary you set.

2. Working Mode: Only when set to working mode will the pet receive a punishment warning if it crosses the boundary.

Why does the system sometimes not give a warning when the signal is fine, but the boundary is crossed?

Ensure the device is in working mode. Warnings for crossing boundaries are only activated in this mode.

Verify the boundary settings to ensure they meet your requirements.

If the main unit is moved, the fence boundary will change accordingly, which might result in no warning being issued if the boundary is crossed.

Is static stimulation safe to use?

Static stimulation is very safe, with intensity  similar to a mild static stimulation, posing no harm to pets.

If you or your pet are sensitive to static stimulation, you can opt for the vibration mode, which does not include static warnings.

What happens with the warning system when there is no signal?

When there is no signal, the warning system will not be activated. This means that if the dog is in an area without a signal, it will not receive any alerts.

Test Mode & Work Mode

What is the purpose and appropriate timing for using the test mode?

Test mode is used to assess signal stability  in various environments, such as indoors or outdoors. Before setting up the fence, test mode should be used to determine the optimal distance where the signal is stable.

What are the differences between the test mode and working mode?

Test mode is primarily for checking signal stability and does not set up a fence boundary. During testing, the pet collar will only alert if the signal is lost. Before regular use, switch   to working mode and set the fence boundary.

What are the specific purposes of test mode and working mode?

Test mode is designed to help you find the best location for your fence by checking for signal interference, allowing you to identify  suitable areas for fence placement. Once switched to working mode, the fence function is activated to ensure your pet's safety.


What are the recommended guidelines for placing the transmitter?

The transmitter should be placed at the center of the fence for optimal coverage. Choose an open and clear area for placement, ensuring  it's not too close to home appliances or other devices that could cause interference.

How accurate is the distance displayed on the main unit?

The main unit displays the straight-line distance, which may have a slight margin of error. Use test mode to accurately determine fence boundaries.

How waterproof is the transmitter

Transmitter is not waterproof. Please keep the main unit away from water.

Receiver Collar

For what sizes of dogs is this product appropriate?

This product is suitable for medium to large breeds of dogs, with neck size of 9 to 26 inches and weighing 20-110lbs.

How many dogs can be simultaneously controlled with this system?

This product can control up to three dogs per transmitter simultaneously. Additional collar receivers need to be purchased separately.

If you want to control 4 to 6 dogs, you will need to purchase a second transmitter.

What is the appropriate duration for wearing the collar?

It is recommended not to exceed 12 hours of continuous wear and to adjust the collar's position and tightness every 2 hours to prevent discomfort or pressure on the pet.

What actions should be taken if the collar causes discomfort to the dog?
  • Ensure the collar is properly fitted and avoid using it to lead or pull the pet.
  • Regularly clean the pet's neck and the contact points of the collar.
  • Monitor the pet's skin for any reactions. If     discomfort occurs, stop using the collar until the area has healed.
Can this product be used with other animals, such as cats, cows, or sheep?

This product is specifically designed for dogs due to their intelligence and adaptability. It is  not recommended for use with cats or other   livestock, as their behaviors and reactions may differ significantly from those of dogs.

How waterproof is the receiver

The collar receiver is waterproof IPX7


Do dogs need special training to use the fence feature?

Yes, appropriate training is required for dogs before using the fence mode. Detailed training guidance can be found in the training manual we provide.

Is special training necessary for dogs to use the forbidden zone feature?

The forbidden zone mode operates on the dog's instinctual responses. When a dog approaches the forbidden zone, it triggers an alert, and typically, dogs will instinctively leave the area. Only minimal guidance is needed for this feature.

How do dogs react in fence and forbidden zone modes?

In fence mode, the dog receives a warning    if it crosses the boundary. If it doesn't return, the intensity of the warning increases, with a maximum of two rounds of six alerts each,    pausing for a minute in between. The warning stops once the dog returns inside the boundary.

In forbidden zone mode, entering the zone triggers a warning, working on the same principle as the fence mode.

Is it possible to use multiple features at the same time?

Training, fence, and forbidden zone functions cannot be used simultaneously. Choose one  feature based on your specific needs.


How do you determine the battery levels of the transmitter and the collar?

The main unit displays the battery levels of both the collar and itself. When the battery is low, there will be an alert, indicating that it's time to charge.

What should be done if there are problems with charging the device?

Use a 5V2A charger for charging. If you encounter difficulties, try replacing the charging cable or check again after charging for 2 hours. A charger with lower power output may cause slow charging.

What happens to the collar when transmitter runs out of battery?

When the main unit has no power, the collar  will not function. However, the collar can still  be used normally while the main unit is being charged.

What is the charging duration for the device?

Using a 5V2A charger, it takes about 6-7 hours to fully charge the main unit and 3-4 hours for the collar. It's recommended to charge when the battery is low to maintain battery life.

What is the operational duration of the device after being fully charged?

The usage duration depends on the frequency and mode of use. For instance,    with continuous use of the fence test mode,  both the main unit and the collar can last for about 20 hours.