• Tone Generator and Speaker Polarity Tester
• Perfect for safely troubleshooting and testing audio systems
• Output range of 0-8 volts at a variable 13 to 10,000Hz tone
• Use for:
      o Setting system levels
      o Checking speaker crossover points
      o Verifying connections
      o General trouble shooting
• 9V Speaker popper for visually testing speaker connection polarity
• Includes RCA and alligator clips for connection
• Auto shutoff for extended battery life
• Control knobs for easy tone and level adjustments