... fuel tank, and control system,etc.. It is applicable for using in many places, such as telecom,bank, uptown, airport where ... ≤1000 metersAmbient air temperature: ≤40°CRelative air humidity: ≤ 90%Controller system1.Standard control panel, including voltmeter, fequency meter, ampere meter ... which can be automatic control for on-off electricity, remote monitoring, automatic parallel operation, etc…