Shanghai Aviation Electric Appliance Limited company, the pioneer of domestic design and manufacture of signal light has a number of core technologies. XHD-17 signal light launches after XHD-16 signal light, it mainly used in all kinds of control panel, warning light boxes and other products, it monitors the working status by using the light signal. Compared with other signal lights,XHD-17’s size is smaller, its weight is lighter, its function is more complete./p>