Gro-Drone One+ is a compact single-COB pendant from Lientec LED. On Lientec’s current shop it appears as Gro-Drone One; core specifications are a Cree CXB3590 36 V LED driven at 1400 mA with 50 W LED rating and 56 W input. Optics are selectable at 60°, 90°, or 120°, and white color temperatures offered are 3000 K, 3500 K, 5000 K, and 6500 K. The luminaire measures 13.5 x 13.5 x 18.5 cm, weighs about 1.5 kg, and lists IP20 (fixture) with an internal Mean Well driver rated IP40. It is made in Germany, ships made-to-order with a typical 1–3 day build time, and carries a 3‑year manufacturer warranty. Effective footprint depends on lens choice and hang height rather than a fixed tent size.
