... Engine Co., Ltd. 6135&12V135 series are water-cooled engine in industry, 24VDC working voltage for ... up of volt meter, frequency meter, a.c. ampere meter, d.c. ampere meter, water temperature meter, oil temperature meter, oil pressure meter, fuel meter, contoller for ... at bottom, contoller with four protections(high water temperature, high oil temperature, low oil pressure, over speed);also can ...