12kw silent type generator air cooled Deutz engine: F2L912D alterator: stamford, leory somer,our brushless alternator. ... air humidity: ≤ 90%Controller system1.Standard control panel, including voltmeter, fequency meter, ampere meter,water temperature gauge, oil temperature gauge, oil pressure ... , automatic parallel operation,etc…Packing: Wooden case or plywood case air cooled DEUTZ generator