... one forever, LCD screen, the standard installation of 86 box,bottom case is made of ABC + PC flame retardant insulating ... and the more use,the more brighter.3.ABS fireproofing bottom case, circuit board completely encapsulation, conforms to the ... : 220V;50 ~ 60HZ;2.Installation environment: applicable International standard 86 bottom box;3.Working temperature: - 10 °C ~ 60 °C4.Work humidity ...