12kw silent type generator air cooled Deutz engine: F2L912D alterator: stamford ... AVR automatic controlAltitude above sea level: ≤1000 metersAmbient air temperature: ≤40 centigradeRelative air humidity: ≤ 90%Controller system1.Standard control panel ... , including voltmeter, fequency meter, ampere meter,water temperature gauge, oil temperature ...