The ETA hand2mind (23123) Ray Box Power Supply is designed for use with the ETA hand2mind (92325) Light Box and Optics Set (sold separately). It produces a fixed output voltage of approximately 12 V at a maximum current of 3 A.

Science education products incorporate applied math and science principles into classroom projects. Teachers in pre-K, elementary, and secondary classrooms use science education kits and products alongside science, technology, engineering, and math (STEM) curriculum to demonstrate STEM concepts and real-world applications through hands-on activities. Science education projects include a broad range of activities, such as practical experiments in engineering, aeronautics, robotics, energy, chemistry, physics, biology, and geology.

ETA hand2mind develops educational and supplemental materials for teaching math, science, reading/language arts for pre-kindergarten through grade 12 students. The company, founded in 1968, is headquartered in Vernon Hills, IL.