... sound monitor 1,Monitor range:160 square metres 2,Mini sound baby monitor:0.2g,14x4.2mm 3,AV and DC jack pinho cheap pinhole sound monitor ... with 160metres monitor range,0.2g,14x4.2mm Features1, Suitable for hidden ... , like CCTV surveillance, burglar alarm, etc.It is for monitor and sound recording. Monitor range is up to 160 square meters. 3,High ...