Name:Telephone Ringer
Material: mian :Plastic
Size: 97mm*57cm*25mm
Color: White

High,low switches for ringer sound.
To increase the volume of telephone ring in noisy places.
To hlep the hearing-impaired to recognize ring coming.
The lamp flasher is offered is offered to aviod the ring noise in a quite environment.

Installation:
1.Please connect the C/O ring plug with ringer's jack.
2.The ringer's plug connet with telephone.
3.There are high,low switches for your selections.

Package included:
1xTelephone Ringer