The PetSafe PWF00-14406 indoor system transmits an elliptcal signal that can be adjusted up to 3 feet on both sides.  The pet receiver collar is lightweight and can fit pets with neck sizes of 6-28 inches, and is perfect for any pet weighing over 5 pounds that is under 40 inches tall. The system comes complete with an anti-battery drain feature, as well as an A/B switch that allows you to train one pet but not the other. This system is ready for installation right out of the box, complete with batteries, set-up instructions and a convenient pet training guide.   This convenient pet barrier acts like an invisible fence, with one difference. Instead of keeping your pet confined to a certain area, this wireless indoor fence system is designed to keep your pet OUT of a room or off your stairs. It can be your child's room, the kitchen, or dining room, with the Pawz Away Threshold Barrier in place, whenever your pet approaches the area, the receiver collar will beep to warn your pet. If your pet continues and enters the off-limit zone, the receiver collar will administer a short static correction, with the level of intensity progressing until your pet responds by staying away from the area. The static corrections are not harmful to your pet and are designed to train your pet instead of punish. With the combination of warning beeps and static corrections, the receiver collar will quickly train your pet to avoid the forbidden zones.  also it might be  that there are some areas of your home that you may need to make off limits to your Pets. With the PetSafe Pawz Away Threshold Barrier PWF00-14406, you can do just that!