Multi function detectable pin hole camera and other monitor wireless products, detectable RF frequency from 1MHz to 6.5GHz for all FR frequency include GSM / WIFI BT / FM / VHF / UHF, 900 / 1200 / 2400 wireless audio and video transmission frequency, super bright red LED, up to 70000MCD bright detector, 3.1 inch antenna length, 4 signal strength LED status indicator from low to high, can find out all monitor camera / pin hole / button and mobile camera, built in 400mA rechargeable lion battery.