This is a brand variable transformer designed for precise, adjustable AC power delivery. Built with a pure copper coil, it offers efficiency and minimal waveform distortion to support accurate testing and operation of electrical equipment. Key benefits Stable, adjustable AC output from 0 to 300V Provides a controllable power source for testing, calibration, and operation of devices that require precise voltage levels. Builtin pure copper coil Improves efficiency and reduces waveform distortion for cleaner power delivery. Compact and accuracy Clear voltage readout via LCD screen and a precise metal gauge for dependable measurement. Designed for easy transport and use in various work environments. Comprehensive safety protections Current limit protection, thermal protection, voltage overload protection, and short circuit protection to enhance safety and reliability. Grounding port on the device for more stable and secure protection. What it is A variable AC power supply (variac) with adjustable output up to 300V AC, built around a pure copper coil for efficiency and performance. Features a clear voltage readout and a precise metal gauge to monitor output accurately. Equipped with multiple protections and a grounding port to safeguard both the user and connected equipment. Specifications and features Built in pure copper coil for efficiency and reduced waveform distortion Output voltage adjustable from 0 to 300V AC Compact form factor with accuracy measurement tools Clear voltage output meter / LCD screen Precise metal gauge Safety protections precision current limit protection Thermal protection Voltage overload protection Short circuit protection Grounding port integrated on the device Use scenarios Lab bench electronics testing and calibration Power and test microcontrollers, amplifiers, power supplies, and other electronics with a stable, adjustable AC source to verify performance across voltage ranges. Equipment maintenance and diagnostics Simulate mains variations or power equipment under controlled voltage to diagnose behavior and safety margins. Educational or hobby projects Ideal for electronics projects, demonstrations, and experiments that require hands on voltage adjustment to observe device responses.