Who need SVA-02 Detector? Government officials, business people and whoever are careful of their voice data should have SVA-02 detector! Put the cell phone in SVA-02 detector the table and no body knows SVA-02 detector is a detector because it just looks like an ordinary pencil box. The Principle of Operating Put your cell phone in SVA-02 detector pencil box. If the cell phone is activated but the display still stays on standby mode, it means that the transmitter of the cell phone is unauthorized switched on. This electromagnetic field change of the cell phone is detected by the SVA-02 detector and then SVA-02 detector will turn on the built-in noise generator to warn you! | 
