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Motorola Bark 500U Ultra Sonic Anti-Bark Indoor Unit

  • 500U Ultra Sonic £39.49

The Motorola BARK500U is an indoor ultrasonic bark deterrent helping you to control the barking pattern of your dog, in key areas of your home. The BARK500U detects the bark of your dog and allows the dog to freely bark for 5 seconds. After the 5 second free bark period is over, corrective ultrasonic sounds are emitted in an effort to control your dog's barking. There is a manual training button to help you train your dog on an on demand basis, as per the required needs.


The BARK500U is triggered by your dog's bark and discourages it with ultrasonic sound up to 10 m away. The Ultrasonic sound is released at a frequency rate of 25 KHz and is inaudible to most humans at a rate of 120 decibels. There are three levels to choose from; low, medium and high to suit the needs of your dog. Your dog will learn to associate their barking with the high-pitched ultrasonic sound to help reduce the barking. This will allow your dog to be more obedient within your home. The two directional speakers will ensure that your dog hears the ultrasonic sound as effectively as they should, further maximising their obedience level.

Wallmountable and portable

Mount the unit onto the wall in key areas of your home such as near the front door. This will prevent your dog from running up to the front door every time someone knocks to say hello. The detachable unit can be taken out of the magnetic base and be placed anywhere in your home. Place on your kitchen worktop, living room table top or near your baby's cot to prevent the dog from causing any noise disruptions.

What is meant by ultrasonic sound?

Humans can only hear sounds at a frequency up to a maximum of 20kHz, whereas dogs can hear up to 60kHz. As such, dogs are sensitive to certain sounds that are undetectable to us. The ultrasonic sound waves released by our No-Bark Collar are at frequencies that are audible by dogs.

Will my dog stop barking completely?

No. The No-Bark Ball was specifically designed to reduce or discourage excessive barking behavior, but not eliminate barking all together.

Is the Shock-Free No-Bark Ball with Dual Sonic Technology appropriate and humane?

Yes. The No-Bark Ball is designed to get your dog’s attention, not to punish it. However, the initial ultrasonic correction may startle your dog.

Will the ultrasonic sound from the Shock-Free No-Bark Ball with Dual Sonic Technology affect other dogs?

Yes. Other dogs within the hearing range may be affected by the ultrasonic sound.

Will the barking from another dog trigger the sensor on the Shock- Free No-Bark Ball with Dual Sonic Technology?

Yes. The sensor will trigger when there are other dogs barking within the hearing range.


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Manual operation

29th Dec 2017

Can you manually activate the anti-bark unit immediately without waiting 5 seconds

  • Customer Service Advisor

Hi Penny,

Thank you for your question.

You cannot manually change this, it is just set at 5 seconds.

Hope that helps.