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Black rectangular handheld device with dual ultrasonic emitters and LED flashlight on front

DNBeffulgent

DNBeffulgent Ultrasonic Bark Deterrent Dual Emitter 50ft 25KHz Flashlight

SKU CH-ZZ0D-N9SK3

Rechargeable dual-emitter ultrasonic deterrent stops barking up to 50 ft with fixed 25 kHz and variable 15–30 kHz frequencies, plus an integrated LED flashlight for night walks

  • Size3.9878 in × 7.6962 in × 13.0048 in
  • Product typeDog Sonic Bark Deterrent
  • Product colorBlack
  • Dual emitters extend ultrasonic reach to 50 ft
  • Fixed 25 KHz plus variable 15–30 KHz deter barking safely
  • Rechargeable unit replaces shock collars with humane correction
  • Built-in LED flashlight adds night-time visibility and deterrence
  • Compact 3.9878 × 7.6962 × 13.0048 in design fits pocket or bag

Multi-Functional Bark Control Device

The DNBeffulgent ultrasonic deterrent combines dual emitters with a built-in LED flashlight for training and night-time safety. It emits fixed 25KHz and variable 15-30KHz frequencies to stop barking, chewing and digging without electric shock. Suitable for dogs over six months old in indoor and outdoor settings.

Rechargeable Handheld Unit With Dual Emitters

The compact black housing measures 3.9878 in x 7.6962 in x 13.0048 in and fits easily in a pocket or bag for walks, park visits or camping. Dual-head ultrasonic technology extends the effective coverage to 50 ft, with best results around 18 ft when no obstacles block the short-wavelength sound waves. LED lighting adds a flashing mode for visibility after dark.

Humane Alternative To Shock Collars

This 2025 model replaces aversive correction tools with sound-based deterrence that causes no physical pain. It is designed for aggressive or large dogs but may not affect puppies under six months or seniors over eight years due to reduced hearing sensitivity. The jump is worthwhile for owners seeking a safe, portable silencer for daily obedience and unexpected encounters.

How it compares

Measured against everything we stock in Pet Trackers & Training Gadgets, at today’s prices. Recalculated every night.

Price $21.99
Cheaper than about 60% of the 392 comparable items (median $26.99).

Specifications

Product
Brand nameFRIENGOOD
Product typeDog Sonic Bark Deterrent
Product colorBlack
Size & build
Size3.9878 in × 7.6962 in × 13.0048 in

Questions about this item

What ultrasonic frequencies does the device emit and how far can they reach?

The unit produces a fixed 25KHz tone and a variable 15-30KHz sweep, with a maximum effective range of 50ft and best results around 18ft when nothing blocks the path.

What are the exact dimensions so I know if it fits in my pocket or bag?

It measures 3.9878in wide by 7.6962in deep by 13.0048in high, making it compact enough to carry in a pocket or small bag.

How do I charge it and which button starts the ultrasonic mode?

Plug the supplied USB cable into the built-in port until the indicator shows full, then press the ultrasonic button — not the flashlight button — to activate the dual emitters.

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