If you have more than 1 dog, You will need an extra receiver for each dog You want to contain. Collar has 3 levels of correction plus sound warning. Compatible with the instant Fence wireless containment system. The product is Manufactured in China.
Instant Fence Receiver
Wireless Extra Collar
For Use Only With The Wireless System
3 Adjustable Levels Of Correction Plus Tone Only Mode
Low Battery Indicator