... 60HZOutput power: DC12V, 1AHow to use?Use special fluorescence marker pen to write on the conductive surface, when the power ... , hang chain, Cleaning clothHigh quality stand holder and flourescent marker pen also large supplied.....we are engaged in researching, developing, ... board ,LED sign board , LED message board , fluorescent marker pen, tripod, etc. LED FLUORESCENT HANDWRITTEN BOARD NEB-19