850D Digital Anti-static Electricity Hot blast Welding RemoverDigital accurate thermostatic design enables clear operation to avoid damage to SMD by temperature-surpassed welding removing. Accurate temperature will be kept for + 1oC, automatic PID controlling mode, stable temperature is kept no matter what is the blast volume. Air flow keeper ensures stable air flow and low noise for your operation in a quiet circumstances. Linear Adjustment Circuit Board of the original manufacturer keeps even and stable air flow with temperature, you can operate with easiness. Dedicated large flow 27L super-quiet air pump