Features:
The telephone ringer has a push button to select between a high and low frequency ringer sound.
Increase telephone ring volume in noisy places or for those hard of hearing.
Flashing light alerts you of incoming calls in quiet environments. Built-in red light flashes when the phone rings.
Both of the jacks can be cable hole. When a jack connected, the other can be connected to telephones.
Compact size, convenient to use.

Specifications:
Name: Telephone Ringer
Material: ABS
Plug Times: More than 800
Working temperature: - 10-50 ℃
Compatible RJ12 Connector: 6P2C
Jack Needle: Phosphor Bronze Pin
Color: White
Size: Approx. 9.7 x 6 x 2.4cm/3.82 x 2.36 x 0.94inch
Weight: 45G
Quantity: 1PC
Note: Only 2 core telephone wires are allowed.

Function Tips:
After the outside line connected to the ring, then the second line is used by the telephone, which can be used normally.
The telephone has a sub-line jack that can be used to connect ringer.
The push button of the telephone ringer is not a switch. It is used for adjusting the two levels of volume.
The product only provides the telephone ringer, without the telephone function of enlarging the voice.

Package Included:
1 x Telephone Ringer(Cable is not included)