The ORBIT B-HYVE 57915 Smart Wifi Indoor Sprinkler Timer is a 4-station controller designed for indoor use. With its compact dimensions of 3.5 inches in length, 8.8 inches in height, and 7 inches in width, this sprinkler timer is lightweight at 2lbs. It is part of the Orbit B-Hyve product line known for its smart technology and reliability. The model number 57915 indicates a specific design within this product line, ensuring compatibility with your indoor sprinkler system needs.