Need professional voice changer (Quantity: 1)

RFQ Details

must be made in china Multimode for select: higher voice, middle voice, lower voice. When selected some section voice, there will be 5 musical scales which can be adjustable. So there will be total 15 kinds of voice frequency for choice.
l Can be used as both the normal phone and voice changer witch it can change the real voice to be different man voice or woman voice for different purpose, to prevent the annoying phones and so on.
l Change the voice, can prevent some person to record for saving the proof.
l Easy installation, connect the telephone cable, that is ok. Can switch to the normal telephone.