... 1, adopt micro controller to control, stable treatment performance, low failure rate. 2, high-voltage generating device is manufactured ... minutes Warm Roast temperature: high: 45 degrees, medium: 40 degrees, low: 30 degrees, (± 3 degrees), optional Output voltage: high-grade ... warm-roast temperature, no matter choose high, medium or low signal, high-voltage electrostatic field is always the same high.2 ...