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Brown rectangular ultrasonic training device with wrist strap and front-facing button

DNBeffulgent

DNBeffulgent F-238 Ultrasonic Dog Training Aid 16.4 ft Brown

SKU CH-011Y-H0EA7

A 2-in-1 ultrasonic trainer and bark deterrent with a 16.4 ft range for indoor and outdoor use

  • TypeF-238
  • Size4.3942 in x 7.0104 in x 14.097 in
  • ColorBrown
  • 2-in-1 ultrasonic device trains dogs and controls barking up to 16.4 ft
  • 25 kHz frequency captures attention safely for all breeds and sizes
  • Portable design with wrist strap enables indoor and outdoor use
  • Simple press-and-hold operation with LED status and low-battery indicator
  • Consistent use helps develop conditioned reflex in 3 to 10 days

Ultrasonic Bark Control Range

The DNBeffulgent F-238 is a handheld ultrasonic deterrent designed to stop excessive barking and correct unwanted behaviours such as digging or fighting. It emits a 25 kHz tone audible to dogs but silent to humans, making it suitable for all breeds and sizes. The device operates effectively up to 16.4 ft indoors or outdoors.

Simple Handheld Operation

The unit fits comfortably in the hand and includes an adjustable anti-static wrist strap for security during walks. Operation requires no special skills; simply press and hold the button to activate the ultrasonic sound and release it when the dog stops the behaviour. A built-in LED indicates operational status and low battery, while four replaceable AAA batteries power the device.

Training Consistency Required

Ultrasonic correction works best when paired with verbal commands and positive reinforcement like treats or praise. The manufacturer notes that a conditioned reflex typically develops within 3 to 10 days of consistent, patient use. Results vary by the dog's breed, age, and hearing sensitivity, and the device is not effective for deaf dogs or those unresponsive to ultrasonic frequencies.

Highlights

  • 2-in-1 ultrasonic device trains dogs and controls barking up to 16.4 ft
  • 25 kHz frequency captures attention safely for all breeds and sizes
  • Portable design with wrist strap enables indoor and outdoor use
  • Simple press-and-hold operation with LED status and low-battery indicator
  • Consistent use helps develop conditioned reflex in 3 to 10 days

Specifications

BrandKirosy
TypeF-238
Size4.3942 in x 7.0104 in x 14.097 in
ColorBrown

Questions about this item

How can I tell the DNBeffulgent F-238 is emitting ultrasonic sound after I press the button?

The LED light on top of the button shows the device is active and also warns when the AAA batteries need replacing.

What comes in the box with the DNBeffulgent F-238 and what must I buy separately?

The unit includes an adjustable anti-static wrist strap and four AAA batteries, so nothing extra is required to start training.

Which version of the DNBeffulgent F-238 should I choose for a large breed versus a small breed?

The single F-238 model emits a 25 kHz tone suitable for all dog sizes and breeds within the 16.4 ft range.

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