High Low switches for ringer sound. Back-side Hole Design for Hanging. To help the haring-impaired to recognize ring coming. Color: White.
BT Tonecaller II 4 Tone Loud Telephone Ringer Amplifier New Factory Sealed
Loud Telephone Ringer Amplifier 70db with Strobe Light Flash Bell Help Ringing Suitable for Landline Phone 6P2C Connector Wall mounted Battery
Loud Telephone Ringer Amplifier with Strobe Light, 60-110dB for Landline Phones
Flashing Loud Telephone Ringer Repeater Amplifier For Hearing Impaired
Loud Telephone Ringer Amplifier Bell For Landline Phone
