1, KJ-1400X Laboratory Muffle Oven, 2, heated by Silicon Carbide rod (SiC), 3, Max. ... cooling fan. Lower teperature in outside case.5. PID automatic control via current limiting phase angle fired the resistor, ... C (for short time)Temperature Control30 steps programmable and PID automatic controlHeating Rate0~15°C/min (suggestion: ≤10°C) ... on all electronic parts. KJ-1400X Laboratory Muffle Oven