Size (L*W*H): 70x50x60mm Application: Experiment kit for high school chemistry primary cell experiment.
Features: 1. Connect copper plate and red wire to the red binding post (positive, + ) 2. Connect zinc plate and black wire to the black binding post (negative, - ) 3. Connect LED (light emitting diode) to binding posts. Long terminal of LED is positive(+), while short terminal is negative (-). 4. Add acid solution into the box. 5. Observe LED grows and bubbles up on copper plate.