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