... alarm systemSize4566x2040x2780mmWeight12000kgDetailed Product Description Standard Configuration of Natural Gas Generating Set: Engine: 1,water cooling , 4 stroke 2 ... class,Protection -- IP22 (IP23 in marine) 3,AVR(auto voltage regulation) Control System: Key starting,Auto control panel, ... Optional of Natural Gas Generating Set: exhaust pipe,flexible pipe,muffler,charge battery,daily used fuel oil tank ...