frequency detectors | 021 99846955 | TXD PINGER | pelacak frekuensi
TXD PINGER is triple mode detector with a unique function, pinger mode. Pinger mode works like a soner of submarine. TXD PINGER gives out cracking sound. Hidden bug picks up this sound and sends it back to the air. Then TXD PINGER picks up the radiowave from the bug again. From this cycle, TXD PINGE