The OSRAM SubstiTUBE LED tube in a ring shape is designed for mains operation or use with electromagnetic ballasts. It serves as an energy-efficient replacement for traditional T9 fluorescent tubes, consuming up to 50% less energy. This LED tube offers quick and easy installation without the need for rewiring. It performs well even at low temperatures and boasts excellent switching resistance (200,000 cycles). Key technical features include a warm white light color (3,000 K), a luminous flux of 1,200 lm, and compatibility with a supply voltage of 220-240 V. It operates at 50/60 Hz and functions within a temperature range of -20 to 45 °C. The lamp adheres to EU 2019/2020 standards for low flicker. Its average service life is an impressive 30,000 hours, contributing to its high energy efficiency. Additionally, the product is RoHS compliant, meaning it does not contain hazardous substances like mercury, lead, cadmium, or chromium IV. It is suitable for decorative use in homes, corridors, garages, and workshops, and can be used outdoors in appropriate fixtures.