Acxico 1 pcs New Version Pulse to Dual Tone Multi-Frequency DTMF Converter Enhanced Module

Dc voltage: 32 v, 48 v.Current: 20-40 ma If you live in the city telephone line has not support dial-up telephone ,Install this module, you dial the phone (no matter which domestic old phone) you can on the telephone line normal use! But also increased the redial and allocated * # # function. Easy to install and use, just connect the 2 wires of the telephone to the designated terminal block and plug in the crystal head of the telephone line to use. Package Includes:1 pcs New Version Pulse to Dual Tone Multi-Frequency DTMF Converter Enhanced Module We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution