222.10 Dust-proof (Optional Accessory)Dust-proof can prevent dust from entering into UPS, it is necessary to usedust-proof in the area with high dust and smog. Dust-proof is installedinside of front panel. About installation procedure, please refer toinstallation manual of dust-proof.1. Dismantle front panel.2. Install dust proof3. Install front panel on UPS.2.11 Box of Insulating Transformer (Optional Accessory)Insulating transformer can filter interference and make current moresteady, it can prevent other equipment in the power system frominterfering UPS, User can install insulating transformer box by theirrequirement.3. Control Panel3.1 Panel DescriptionOperation code/ Fault codeMute ModeUPS settingModuleInput Voltage/FrequencyOutputVoltage/FrequencyLoad MattersModuleOperatingModeBattery MattersModule