It teaches your pets to avoid areas inside the home and outside in the yard. The transmitter sends an elliptical radio signal adjustable up to five feet. The Mini Pet Barrier will keep your pet off kitchen counters, away from the trash, and off your furniture to protect your pet and your home. System Includes: Barrier transmitter (3 alkaline AAA batteries required, not included) Key Features: Waterproof and battery operated barrier fits easily in small spaces Distinct settings for multiple pets Easy setup and training For indoor or outdoor use For dogs and cats 5 pounds and up Range adjustable up to 5 feet Compatible with YardMax In-Ground Fence

Pack of 2 Mini Add-A-Barrier PWF00-14040.
Can be used for pets 5 lbs and over. Waterproof and may be used indoors and outdoors.
Compatible with: ZND-1200, PWF00-11923, PWF00-13664,PWF00-13665, PIG00-11115, PIG00-11116.
Each pack includes one barrier transmitter, receiver collar not included.