Features: Simple design, easy and portable to operate. Multi-functional detectable pin hole camera and other wireless products. Built in super bright red LED, can find out all camera, pin hole, button and mobile camera, etc. Dual mode RF detectable: buzzer mode and vibrate mode; can also used earphone to detect RF signal. 4 signal strength LED status indicator from low to high. Adjustable sensitivity with the potentiometer. Equipped with retractable antenna, also with compass. Built in 120mAh rechargeable li-polymer, convenient for use. Perfect for sweeping cameras and bugs in conference room, changing room, hotel rooms, etc.