iProtect RF Wireless Signal Detector

Here is another portable gadget that lets you detect 3G, 4G, Bluetooth and Wi-Fi bugs in your property. It has a short range antenna with a 16-segment indicator bar to show the RF level as you get closer to each item. It runs on 2 AA batteries up to 10 hours.

The device provides you with vibration alerts. It can detect audio recorders, GSM bugs, spy phones, and harmful emissions.