Used 

PetSafe Deluxe Little Dog IN-GROUND Fence Receiver as pictured 

Works with: All PetSafe IN-GROUND Fence Systems (except ultrasmart & yardmax)

Includes:

• Receiver
• Fully Adjustable Collar Strap
• Battery

Features:

• 4 Levels of User Adjustable Static Correction, Plus a Tone-Only Mode
• Works with all PetSafe In-Ground Fence Systems (except ultrasmart & yardmax)
• Also Compatible with the PetSafe Indoor Barrier Transmitter (PIRF-100)
• Waterproof