... temperature -20 to + 60 degree Celsius Features:1.Super bright light output & well controlled beam angle;2.Special circuit design, ... to affect the normal work of the entire lamp.3.led light source to achieve a lower power consume,energy saving ... Living room, bedroom, kitchen, washroom;2. School, university, hospital, hotel;3. Conference, meeting room, show room, showcase;4. Commercial complexes;5 ...