For dogs 20-75 lbs.
Contains up to 5 acres
Patented Run-thru Prevention
Patented "Progressive Correction" technology
Uses 6-volt batteries available at most grocery stores
Water resistant

Innotek SD-2000 Electric pet fence Designed for yards up to 5 acres in size, the ultra-economical SD-2000 features a water-resistant battery-operated collar receiver.

To offer secure, reliable containment. Patented run-through prevention and timeout between corrections help your dog learn his limits quickly and safely.

Includes 500 of single-conductor ground wire, indoor wall-mounted transmitter, one collar receiver with neck strap, boundary wire, battery, training support 800 number, complete installation instructions, video, training flags, and accessories.

Resource: Basic In-Ground Pet Fencing System Innotek SD-2000