If you want to use 2 dogs on the Perimeter Technologies Containment systems, you must purchase an additional collar. Includes Medium Comfort Contacts.

For Use With: PTPCC-100, PTPCC-100D, PTPCC-100DP, PTPCC-200, PTPCC-200D, and PTPCC-200DP.

Features:

• Replacement collar for Perimeter Technologies pet fence systems
• Pet collar is waterproof and lightweight (2.6 oz)
• Comfortable, adjustable strap for neck sizes up to 26 inches
• Soft rubber Comfort Contacts included