How the Masbrill 5-in-1 Tech safely redirects your dog's attention in milliseconds.

When bad behavior starts, emit a precise 25kHz ultrasonic wave. It’s completely silent to you, but acts as an immediate, harmless 'Hey, stop that!' to your dog's sensitive hearing.

Pair the ultrasonic wave with gentle Beep or Vibration modes (1-9 adjustable levels). This trains your dog to associate the warning with their action without any physical shock.

For ultra-stubborn habits, the humane static shock mode offers an absolute safety baseline. It's an unpleasant tingle, never a punishment—built to protect, not hurt.

Off-Leash Freedom With 984ft Ultra-Long Range.

Powered by our advanced RF core technology, the Masbrill transmitter penetrates thick trees, backyard fences, and open spaces up to 984 feet. Enjoy instant, lag-free responsiveness the exact millisecond you press the button, ensuring your dog’s safety even at a massive distance.

Dual Ultrasonic Modes

Use Ultrasonic + Flash or Ultrasonic Only to stop barking or unwanted behavior from up to 16–23ft away. Emits safe 25kHz sound frequency only dogs can hear.

Waterproof Receiver

Durable IPX6 collar receiver designed to handle rain, splashes, and playful outdoor sessions with no worries.