Size is 250x250x300mm (10″x10″x12″) (WxHxD), Two doors muffle furnace with sliding rails on each door, which makes load samples easy, Operating Temperature is 1300℃ (1400℃ for short time), Maximum energy efficiency is achieved by surrounding the chamber with thermal-efficient alumina fiber ceramic insulation, Heavy duty double layer structure with cooling fan. Lower teperature in outside case, PID automatic control via current limiting phase angle fired the resistor, e.g. SCR(Silicon Controlled Rectifier), Power control with 30 segments programmable.