Aetertek AT-216F Owner's Manual page 8

3.Do a self-test by pressing the power button 3 times. The receiver will beep, vibrate and
discharge shock. Now it is ready to let your dog wear the receiver.
Thread the collar straps through the clasps, adjust the length to fit the dog's neck so it will
not make the dog feel uncomfortable. To ensure ideal shock effect, the collar's prongs
should have direct contacts with the dog's skin.
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