WH-2301S Wang House Electronic Transformer (Replaces WH-2101S) Buy from Trusted Official Distributor: Express Lighting. Designed according to the most commonly used Lamp base in North America Dimmable up to 600W dimmers Short circuit and overload protection: Transformers shut off short or overload on the secondary side, automatically reset when problems corrected Will Replace Electronic Transformer Model No WH-2101S Watts: 35-230W / Volts: 12V / Dimension: (LxWxH) 4.29" * 1.83" * 1.24" / Standard: UL Approved