... stable, long lifespan, easy to install, low power consumpsion and friendly environment.2. Mainly Features1). LED ... in bright sensor, brightness can be adjusted automatically at daytime and night in accordance to the ... : 140 degree9). Best Viewing distance: 10-110meters10). Power Supply: DC12V +/-0.5V11). Control Way: by ... 12'', 4*12'', 4*8'', 4*24'' with one side, two sides, three sides, four sides which ...