Control: toggle switch, potentiometer thermostat. Display mode: single LED light display. Function mode: A. toggle switch control the machine’s startup and shutdown, potentiometer adjust the temperature setting. B. Single LED display working state. C. 180 ℃, 190 ℃, 200 ℃ Three stalls adjustable. D. automatic power conversion, control the temperature accurately. E. Work 1 hour off automatically. F. NTC open / short circuit protection, protect whole machine safety
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