Characteristics:
When you dog approaches the boundary, the signal causes the dog`s collar receiver to deliver a warning beep first. If your dog continues closer t the boundary, the system will issue a mild shock.
If your dog continues further, hte system will issue stronger shocks until your god returns to within the boundary you have set up. Your dog will naturally seek to avoid correction, and is content staying within established boundaries .
Warning：
1, Low battery may cause intermittent operation. Do not use when you feel low.
2, Let your dog adapt to the collar before you start training. You should allow your dog to accept the collar as a part of her life.
3, Do not let the collar receiver over your pet for more than 12 hours a day.
4, When the collar in your dog, do not set the program.
5, Electronic dog only for use under the supervision of the dog owner.
6, Away from children can touch the place.

How it work:
If your dog walk out of the signal boundary of the transmitter,the Receiver will sound bee~for 3 times,then start to shock continuously for 3 minutes,pause for 1 minute and start to shock for 3 minutes alternately until the dog back into the signal boundary.
Full instruction manual:
Take control of your dog's problem behaviour as soon as it occurs. Build communication between you and your dog. The collar's sound or vibration will give your pet a much a quicker understanding of when he is misbehaving with barking. Vibrations do not harm your pet.
Auto Power Save:
The Receiver will go into standby mode if no operations within 1 minutes,One transmiter supports several receiversto work simultaneously.
Specification:
Material: ABS plastic+TPU
Power adapter: US plug
Adjustable signal level: 1-100
Remote control range: up to 150 meters in radius
Compatible pet neck circumference: 0-25”
Water-resistance level of collar: IP67