This is the low-profile mat that teaches pets to stay away from a Christmas Tree. The crescent-shaped mat sets up in front of a tree and produces a harmless electric pulse when the pet steps on it, teaching dogs or cats to stay away. The mat has three adjustable power settings for small, medium, or large pets and integrated LEDs display how many times the pet has stepped on the surface. Unlike bulky pet barriers, this superior pet boundary is only 1/2" high and 12" deep, allowing you to step over it easily to access the tree. Requires one 9-volt battery. Includes one 50" L x 12" W mat that will protect up to a 48"-diameter tree that's set up next to a wall; additional mats can be combined to accommodate larger trees or completely encircle a tree. (1 lb.)