20 gauge polished 304 stainless steel with smudge-free clear powder coat. 1200 watts, 120 volts primary voltage, 11, 12, 13, 14, 15 volts secondary. Fully grounded and isolated with encapsulated core and coil. Extra large terminal strip for multiple low voltage cable connections. Auto thermal shut-off. 6 foot heavy gauge grounded water-resistant power cord with integrally molded plug. UL Listed for landscape lighting transformers. Timer ready. Made in the USA.