LED Ray boxThis LED ray box provides a safer, cooler alternative to traditional light sources in optics experiments. It includes a front panel with 7 grooves for inserting various lenses and accessories, allowing students to create and observe divergent or convergent rays. The box features three light openings, two of which can be used simultaneously by different student groups. Designed for clarity and ease of use, the unit is powered by a low heat 12V, 24W B15