Reaction Timer for 1 or 2 Players, 110V AC

This Reaction Timer measures user response to visual or audio stimuli (or both simultaneously) down to the millisecond. Three stimulus settings allow customization (visual, audio, or both), and a mode toggle switch supports one or two users for friendly competition. The unit measures 8 x 5 x 2.5 inches and includes a 100-240V AC adapter with 5 ft cord. Provides immediate feedback displaying reaction time in milliseconds. Suitable for science classroom studies of the nervous system, reflexes, and neuromuscular physiology in eye-ear-hand coordination.