The ER300 is a circular vertical skylight panel from ARCOLUME’s E-Series. Designed for recessed ceiling mounting, it emits light vertically and uniformly, simulating the natural downlighting effect of a skylight. With 150W power, high color rendering (CRI >93), and a full-spectrum adjustable color temperature (2100–7800K), it’s ideal for small rooms, seating areas, or wellness-focused interiors. Supports Mesh5.0, DALI, and 0–10V smart control systems.