High Tech Power Pet Ultrasonic Pet Collars

Compatible with High Tech Power Pet Electronic Pet Doors Batteries last around 3 months, powered by B3V1A batteries Adjustable collar range: 1" to 24" Programmable operation range: 1 to 10 feet (adjustable for inside and outside separately) Waterproof and durable  This is the MS-5 model which replaced the MS-4 model that is discontinued These cutting-edge collar keys are designed to work seamlessly with all models of High Tech Power Pet electronic pet doors. The adjustable collar ranges from 1 to 24 inches, making it suitable for pets of various sizes. With a compact case measuring just 2" wide x 1" high x 3/8" deep, it won't weigh down your furry friend. The waterproof MS-5 collar key keeps up with every pet's lifestyle and activity levels. It operates on a B3V1A battery, providing approximately three months of use. The batteries are easily replaceable, ensuring your pet's access to the pet door remains uninterrupted. The Ultrasonic Collar Keys can be programmed to work at a rang