Iiyama e2283hs b1 pro lite display diagonal 54 61 cm 21 5 response time 2 ms display brightness 250 cdm rms rated power 2w colour of product black cable lock slot kensington vesa mounting interfaces compatibility 100 x 100 mm on screen display osd languages chi tr cze deu dut eng esp fre ita jpn pol rus input voltage 100 240v input frequency 5060 hz power consumption standby 0 5w