... constant current driver can work under unstable voltage. No strobo flash, no radiation, no ultraviolet, no harmful gas, no glare. Working temperature: -10°C~ +40 ... light even, soft and high transmittance. Instant start, no flickering, no humming. No hazardous material ( mercury, lead). The installation is very ... be removed after installation to keep the panel clean.Update Date:2011-7-28 20:57:25