Use a radio frequency detector If you are particularly worried about hidden cameras in your rental, and are willing to spend upwards of $80 for peace of mind, get a radio frequency (RF) detector.

This hidden camera detector is rechargeable, fits in your bag, and it works in Airbnbs, hotel rooms, rental cars, or even your home.

Measuring RF power and return loss in radio or test-and-measurement applications typically involves the use of directional couplers and RF power detectors. This solution combines the two.

Norwood, Mass. — The AD8312 RF power detector as been developed for GSM, CDMA, W-CDMA, and TD-SCDMA designs. Delivered in a 6-pin package, the detector measures signals with operating frequencies less ...