The Intermatic Px300s Transformer is a powerful 300 VA transformer with a NEMA 3R enclosure rating, suitable for both indoor and outdoor use. It features a stainless steel enclosure, a 12V AC output voltage, and a maximum wattage of 300. This transformer is designed for a pool light application, with an input voltage of 120V AC and a secondary voltage rating of 14V AC. With a compact size of 4.5″ depth, 7.25″ height, and 5.25″ width, this transformer is ideal for wall mounting and operates at a maximum operating frequency of 60 Hz.