QB-288 LM301B is Lientec LED’s 288‑diode quantum board configured around Samsung’s LM‑series mid‑power LEDs. It is sold as a DIY board and driven by constant‑current or constant‑voltage Mean Well drivers; the brand’s driver‑compatibility sheet lists per‑board electrical power from roughly 56 W at 1,050 mA up to about 116 W at 2,100 mA, with typical board voltage around 53–55 V. Lientec documents multiple correlated colour temperature options for its QB boards (e.g., 3000 K, 3500 K, 5000 K), allowing growers to match spectrum to stage. Coverage depends on driver current, mounting height, and layout; Lientec does not publish a fixed coverage figure for a single 288 board.
