... IIB,IIC;3:Indoor or outdoor(IP54,IP65)Features:1:Enclosure is cast with aluminum alloy,surface is sprayed with ... plastic,fine outline;2:Increased safety enclosure,the main structure structure can be fixed by user's ... proof indicator lamp,ammeter,voltmeter button and transfer switch.3:Flameproof enclosure,bulit-in indicator lamps,ammeter,voltmeter,button,transfer switch and ...