Low-frequency electrodeless lamp, tunnel lamp (SYDPSDD - 002) material and characterization of lamps and lanterns: * made by the high pressure die casting aluminum and aluminum integration tunnel lamps, shell corrosion resistant electrostatic spraying processing, reasonable structure; * high purity aluminum reflector anodic oxidation, high reflectivity, reasonable light distribution design; * high strength tempered glass pervious to light cover, high light transmittance. * new silicon rubber sealing ring, high temperature resistant; * aluminum buckles, opens conveniently; * install adjustable Angle between 30 ¡ã ~ 150 ¡ã. * protection grade: greater than or equal to IP65; * product size: H300mm W185mm L610mm * * * adapter light source: low-frequency electrodeless lamp of 80 w / 120 w / 150 w. * use scope: tunnel, tunnel lighting, urban underground engineering environment.