Dental Pulp Tester For Endodontic Vitality Checklp Tester is designed for testing whether the teeth nerve is alive or dead Preset speed mode (high mid low speed). A gentle, pulsed stimulus begins to increase at a rate specifically designed for professional use comfort. If the professional use indicates perception, simply release the button. The stimulus stops immediately, but the numbers remain frozen on the face for about 3 minutes. Easy to operate and use. Features: Preset speed mode (high medium