Dogtra 150NCP - Manual (Page 11)

COLLAR
Receiver Battery Charging Receptacle
On the inside of the collar, next to the collar
strap, is a battery charging receptacle with a
rubber cover plug.
Internal Antenna
The has no external antenna
on the collar. The Antenna is inside the collar
receiver.
Receiver
Charging
Receptacle
18
COLLAR
Contact Points
The collar should be fitted so that the
stainless steel contact points press firmly against
the dog’s skin.
A loose fit can allow the collar to move
around on the dog’s neck. When this happens,
the contact points may rub the skin and cause
irritation. If the collar is too loose, electrical
contact will be inconsistent and your corrections
will be inconsistant also.