PetSafe Bark Collar picks up the vibrations from your dog’s vocal chords as they bark.
6 levels of correction
PetSafe Bark Collar PBC-302

The PetSafe Bark Control Training System with Video features 6 levels of correction.
Activated only by your dog’s own barking and neck vibration
When your dog barks, a harmless static correction is emitted to correct the behavior. It is a sufficient deterrent to excessive barking. Adjustable collar for neck sizes 6"-28". Also comes with a training video.
The PetSafe Bark Control Training System helps your dog learn the difference between good barking (for protection) and bad barking (due to boredom or over-excitement). The PetSafe Bark Control Training System picks up the vibrations from your dog’s vocal chords as he barks. The vibrations cause the no bark collar to send an electronic signal (a static shock) to your dog. Your dog will quickly learn that barking causes the signals, and that not barking is the way to avoid the signals.
The PetSafe Bark Control Collar trains humanely:
6 progressive stimulation levels
If your dog stops barking, the collar rests. If your dog keeps barking, the collar emits more signals. Each signal is slightly stronger than the one before it.
PetSafe Bark Control Collar provides an audible warning signal:
A “warning beep” lets your pet know that bark correction is about to happen!
Automatic shut-off:
The collar automatically shuts off if your dog barks 15 times within 50 seconds.
The collar will stay quiet for a full 3 minutes, giving your dog a break from training.
Product Features:
Waterproof
Safe in kennel situation or around your other pets
Activated only by your dog’s own barking and neck vibration
Light compact 1.5 oz. receiver
Use indoors or out
Uses common PetSafe RFA67D-11 6-Volt Lithium Module
Lifetime Warranty