... . Tumbling (otherwise) when lead terminal connected to the tubes, please tighten, lest cause poor contact. (light, otherwise may cause ... light. WarningOtherwise may cause sore eyes, visual disturbances, etc. Please wear special uv protection glasses. 2) need to use occasions ... need to replace the UV lamp (please change according to the standard model). The attention Please don't overuse tubes, it is ...