wall up down lights Energy-saving,elegant, no noise, no ... saving|: Low power dissipation, low heat, and high-brightness.Front lighting, well-distributed and no dark spot, built in the ... no harm to the eye or body, nice-looking and environment protection.Long lifespan: over 50,000hours in normal use ... with wire socket. Connect to the electricity L\N and you can use it. Only professionals can open the ...