1 button 3000 series smart line audiophone with electronic call tone

The 3011 smart line audiophone incorporates a 3 level electronic call tone input and 1 button lock release. For use on traditional 3+1 and 4+1 audio systems including 4K series, 8K series, VR4K series and VR120 series audio kits.

• Includes 1 lock release button.
• 3 level electronic call tone input.
• Manufactured from impact resistant ABS plastic.