... marker with 4 LED and 2 reflectors ---Visible distance: more than 500m Solar safety light is on big truck ,guardrail ,wall ,tower ... .8V/30mA4. Light Source: using 4 red φ5 red standard LED mixture with reflector in the middle.5. Light Mode: Flash ... north avenue,Panyu district, Guangzhou,Guangdong,China solar safety light,led warning lamp ,signal light