LED tubes in ring form for electromagnetic ballasts (KVG/VVG) and mains voltage. Product features: LED alternative for classic T9 fluorescent lamps in KVG fixtures. Uniform illumination. Lifespan: up to 30,000 hours. Mercury-free and RoHS compliant. Product advantages: Easy, quick, and safe lamp replacement without rewiring. Energy savings of up to 50% compared to T9 fluorescent lamps. Also suitable for operation at low temperatures. Direct operation at 230 V mains voltage is possible. Application areas: General lighting in ambient temperatures from -20 to +45 °C. Corridors, stairwells, and parking garages. Household applications. Decorative applications. Legal notice: When replacing a T9 fluorescent lamp, overall energy efficiency and light distribution depend on the design of the installation. Safety notes: Not suitable for operation with electronic ballasts. Use in outdoor applications is possible in suitable damp-proof fixtures according to the data sheet and installation instructions. All electrical connections must be made by qualified personnel only. Disconnect mains power before installation. The lamp is not suitable for emergency lighting operation.