... rendering index90(at 3000k) Features of SYS9290 ar111 led lamp: Built-in constant current drive power, stable performance. ... visible light. Compared with the traditional high-pressure sodium lamp, LED lamp can save more than 70% High safety coefficient, ... voltage and current is lesserApplication of SYS9290 ar111 led lamp:Living room, bedroom, kitchen, washroom;School, university, hospital, ...