DYNAMETRIC HEADSET BEEP TONE GENERATOR (PHONE POWERED), BLACK
The TBR-11E inserts a beep every 15 seconds on your phone call. The beep is heard by everyone on
the call. The unit is powered by the phone, so no separate power supply is needed.
The unit plugs in between the coil cord and the phone base, and will insert a beep on the call whenever
the handset is Off-Hook.
