The Protel Double Gong Ringer is designed to increase the ring volume on Protel payphones.

- Provides a louder ring volume vs standard equipped ringer.
- Traditional Bell ring instead of electronic ring.
- Line Powered, requires no electricity.

Compatible only with the following Protel circuit board models: 7000/9000, XK310 (310 grey chassis only), 2000/6000, 200BB+/200B.
Please select your phone model below.