The shape of the signal is in a perfect circle and the shape cannot be altered. The range of the Instant Fence™ can be increased by using two or more transmitters, this creates multiple intersecting circles. Two transmitters would create a boundary in a shape similar to the MasterCard™ logo.

The signal is cancelled where the circles intersect, allowing the pet access to the entire area. The transmitters can be located a maximum of 150 feet apart and each transmitter must be out of the weather, as they are not weather resistant. An additional transmitter would create a boundary that is up to 180 feet wide and up to 230 feet long.