... vividly.10) Excellent heat dissipation design based on aluminum alloy structure, the surface temperature is below 65 ° C, more safe ... cabinet,School,university,hospital,hotel,guesthouse,museum,office,supermarket,commercial building,station,bus,warehouse,signage,residential,parking lot,train,railway, ... when power is on.3)Do not watch the light-emitting surface directly.4)Please choose the right power ...