
📡 UWB Technology for Ultra-Precise Dog Containment
Our 3-in-1 wireless dog fence uses advanced UWB (Ultra-Wideband) technology—offering superior accuracy, stability, and reliability compared to traditional RF or Bluetooth systems.
✅ No false triggers from Wi-Fi, metal, or obstacles
✅ Accurate distance detection—correction only when your dog leaves the safe zone
✅ Stable signal in complex or multi-level environments
✅ Instant response time for fast, effective training
With UWB, enjoy next-level control and peace of mind—knowing your dog is safely within boundaries.

Real-Time Distance Monitoring
Monitor your dog’s position in real time and receive immediate alerts when they approach or cross the set boundary—ensuring fast, effective response.

3-in-1 Wireless Dog Fence
The F383 combines Wireless fence, Training collar, and Forbidden zone control in one Transmitter, easy-to-use system—no wires, no apps, no hassle.
Keep your pet safe and obedience wherever you go.

Flexible & Removable Mounting
The 3-in-1 transmitter supports table, wall-mounted, and handheld use.
The adjustable tripod stand offers height control, letting you position it for the best signal coverage anywhere.
Whether you're training indoors, setting boundaries in the yard, or traveling with your pet, this flexible setup gives you total control over signal placement and coverage.

LONG BATTERY LIFE
Equipped with a 3000mAh transmitter and a 1100mAh receiver, the system offers an extended runtime.

Multi-Dog System
Control and train up to 3 dogs at once with flexible pairing modes like 1, 2, 3, or any combination (1+2, 1+3, 2+3, 1+2+3).
Each collar operates independently for personalized training.

IPX6 Waterproof
With an IPX6 waterproof receiver collar, it's perfect for water-loving dogs. Rain, mud, or splashes from a pool—training continues without interruption.

For Medium & Large Dogs
Durable, adjustable collar with a strong buckle and easy-slide strap—perfectly designed for medium to large breed necks.

FAQ
What is the range of the Masbrill Wireless Dog Fence?
The Wireless Fence Mode covers a circular area from 10 to 120 feet in radius, up to 1.04 acres. The signal range can be adjusted directly from the transmitter.
Can I use this system for multiple dogs?
Our system supports up to 3 dogs simultaneously. You can pair collars in various combinations (1, 2, 3, or 1+2+3), and control each dog independently.
Can this system be used indoors?
Yes, the wireless design allows it to be used both indoors and outdoors.
Will it harm my dog?
The system is designed with safety in mind. The correction levels are adjustable, allowing you to choose the most appropriate setting for your dog. The static correction is safe and mild, serving as a reminder rather than a punishment. Always start with the lowest level and monitor your dog's response during training.
What happens if my dog crosses the boundary?
The collar automatically activates, starting with a vibration warning followed by static correction to guide your dog back.
Is the collar waterproof?
Yes, the receiver collar is IPX6 waterproof, making it safe for outdoor use and light rain. However, we don’t recommend submerging it in water.
Do I need Wi-Fi, an app, or a SIM card to use this system?
Not at all! This system runs completely offline. No SIM, no subscription, no app, and no internet connection required.
How long does the battery last?
Transmitter: 3000mAh battery, lasts 4–10 days per charge.
Receiver Collar: 1100mAh battery, lasts 2–5 days per charge depending on usage.
How do I contact customer support?
You can reach us at Masbrillofficial@gmail.com for any inquiries or support.