---Solar warning light with 4 LED and 2 reflectors ---Visible distance: more than 500m Solar warning light specification . 1. Solar Panel: 3.5V/78mA, high ... Length:100mm, Width:83mm, thickness:26mm.11. Weight: about 180g.12. Using Temperature Range (Degrees): -20°C~+80°C.13. ... truck .You can stick it on truck or wall ,guardrail for safety . solar warning light,amber warning lamp ,solar signal light