Arnstein is an economical LED ceiling light, powered by SANAN SMD LEDs. It is made of Iron with a PMMA cover. Arnstein comes with a microwave motion sensor and a dimming feature as well. On top of that, there are multiple settings where one can adjust the time delay, brightness, and detection range accordingly. Also, the stand-by period (time period the light will remain at 20% before it is completely switched off) can be fixed as per the application area. "0" means that the light will turn off (no dimming) while "∞" means that it will remain at dimmed level (20% light output) until motion is detected.