Qstech Indoor LED Screen P1.8 SIZE _ 5*4m total 20m Model H3118 FHD support 4K LED Type SMD Pixel Pitch 1.8 (mm) Brightness (nit) 800 -1000 (cd/m2 ) Refresh Rate 3840 (Hz) Cabinet Size 640×480×31 (W×H×D) (mm) Cabinet Resolution 348×261 Cabinet Material Aluminium alloy Power Consumption 295/100 Viewing Angle 170°/170(H/V) Maintenance FRONT Operating Temperature/Humidity (℃/RH) -20~40/10~65% No condensation