The short answer is Yes. The SD-2025 is an Innotek, battery replaceable, waterproof collar for the Innotek Pet Fencing Systems.
As a general rule, the products that begin with SD are compatible with each other. This means that the SD-2025 Collar is compatible with the SD-3000 Basic Contain ‘N’ Train System, along with the SD-2000 Basic In-Ground Pet Fencing System, and the SD-2100 Rechargeable In-Ground Pet Fencing System.
The restrictions are that the SD-2025 Collar will not work with the Remote Control for the SD-3000, nor is it compatible with the Ultrasmart products.
The Innotek SD-2025 Collar, Compatible with the Innotek SD-3000/2100/2000 Pet Fences is On Sale with Free 2-Day Shipping from Mutt Fence.