Detects; CLASS/FSK signal (message waiting visual feature).
IP,PBX and Key system that uses the message waiting visual Signal (CLASS/FSK Signal).
Line powered, no battries or transformers.
FCC approved.
This is the only unit manufactured that works with a residential/IP line.

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 2 inch
Height : 1.2 inch
Length : 3 inch

Item Weight: 0 ounce (View shipping rates and policies)
Shipping Weight: 0 ounce (View shipping rates and policies)

ASIN : B00U0EONAO