Feature :  Only iron can be heated directly. Other metal materials need graphite crucible.  Input voltage: DC 24V--65V  Input current: 45A   Power: 2000W.  Dimensions: 190x100x95mm  Short Circuit/Overload: Input current is greater than 48A enter protection, LED FFFF display.  Temperature protection: Heatsink temperature higher than 75 °C, display E3, under 65 °C back to normal.  Undervoltage protection: Input voltage is less than 25V, display E2. Input voltage up to 27V back to normal.  Power tube broken/short circuit, display E1.  Copper pipe and water pipe connections, the need to seal to prevent water leakage.    Heating steel material temperature: (>48V) solid round iron bar about 700 ° C (reddish) hollow tube about 900 ° C (bright red)     Heating graphite crucible temperature: (>48V) about 1300 °C (the higher the voltage, the higher the temperature), purity / presence or absence of insulation, will also affect the temperature   Package Contents:  1x Induction Heating Board  1x Spiral copper pipe  1x Water pipe  1x Mini Water Pump  1x power Adapter  1x power supply  1x cable  1x switch