Brand: E-Blox. MPN: CB-1054. PLAY & LEARN: Learn about voltage, current and how circuits with alarms work.   ENHANCES CREATIVITY & IMAGINATION: Through the joy of play and discovery, children can innovate, integrate, and be inspired as they plug-together different bricks and modules to create a variety of toys and games that light up and make sounds.   COMPATIBILITY: Directly compatible with other brick building construction sets and other major brick brands. Not your ordinary blocks!   DON'T TOUCH THE SIDES: Use a steady hand with the buzz wire or the buzzer will beep. Hours of fun taking on the buzzwire challenge while you learn STEM.   STEM Education: E-Blox toys are helpful building blocks for science, technology, reading, writing, engineering, the arts, and math.