GL-4000s

MIXJOY GL-4000s is a 450 W quantum‑board LED grow light aimed at 4x4–5x5 grow spaces; published specs indicate up to 5x5 ft flowering coverage. It uses Samsung LM301B white diodes (a 3000K and 5000K mix) supplemented with 660 nm deep‑red, 740 nm infrared, and UVA emitters, and supports Bluetooth app control for dimming, group control, veg/flower modes, and multi‑schedule timing via the Grow Lamp app. The board carries about 1,256 LEDs and is positioned as an HPS/MH replacement with lower power draw. Typical use is full‑cycle cultivation where uniform canopy PPFD and spectrum control are desired. This model belongs to Mixjoy/Sylstar’s GL series and first appeared publicly in 2021.