ZYFBD Variac Variable Transformer AC Voltage Regulator Converter 500VA 3000VA Built In Copper Coil for Power Supply Durable, Versatile, Wide Range of Applications

1. High-efficiency and secure voltage transformer with pure copper coil for durability and no waveform distortion. 2. Brand new adjustable AC power supply with a single-phase input and 0-300V AC output voltage adjustment. 3. Compact and accurate variable transformer with LCD screen and metal pressure gauge for easy transport. 4. Safety features include current, thermal, voltage overload, and short circuit protection, along with a grounding port for stability. 5. Widely used for motor speed control, label printing, railroad switching tests, power supplies, and telecommunication equipment.