(DINOMARKET.com) - Apabila pesawat telphone di rumah atau di kantor anda suara dering nya kecil maka harus di bantu dengan speaker eksternal yaitu Telephone Ring Amplifier RJ11 Ringer dengan kekuatan 75dB. Spesifikasi - This portable Telephone Ringer goes between your telephone set and the wall phone line to boost the volume of the ring. - The RJ11 Telephone Ringer wonders in pronouncing incoming calls particularly in noisy places. - It helps the hearing-impaired, the heavy sleepers, and people who love wanderi...
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