Features: 1. With high frequency up to 800kHz-1.1MHz, the quenching thickness can be controlled lower than 1mm, and very thin and tiny parts can be easily heated. 2. IGBT and inverting technologies of third generation been used; Higher reliability and lower maintenace cost. 3. 100% duty cycle, continuous working is allowed at maximum power output. 4. Constant current or constant power status can be selected accordingly to achieve higher heating efficiency; 5. Display of heating power and heating current and oscillating frequency. 6. Simple to install, installation can be done by unprofessional person very easily; 7. Advantages of the model with timer: The power and the operating time of the heating period and the retain period can be preset respectively, to realize a simple heating curve, this model is suggested to use for batch production to improve the repeatability.