Features :1. Can effectively detect wireless pinhole camera; monitor; track; and cell phone signals GPS blocking devices and other wireless devices2. Detection frequency range of 1MHz-6.5GHz3. Sound; vibration alarm function4. Wireless signal strength of the instructions; quick positioning signal source5. Detection sensitivity adjustable6. Low battery instructions7. The use of two AAA batteries.8. The size of a small; convenient to carry&nbsp;&nbsp;Specifications :Frequency: 1MHz&#65293;6.5GHzAlarm :Sound; vibration and muteLength: 170mm long rod antennaBattery: AAA Battery &times;2Dimension: 65mm &times;54mm &times;18mmWeight: 45g&nbsp;<img data-srcid="-" src="https://image.doba.com/dgd1-ItvjiMnnZoDz/ct15-portable-wireless-pinhole-camera-professional-rf-signal-detector-with-alarm-function.jpg" alt="dropship CT15 Portable Wireless Pinhole Camera Professional RF Signal Detector With Alarm Function" /><img data-srcid="-" src="https://image.doba.com/dgd1-NwbsmuEkaPvi/ct15-portable-wireless-pinhole-camera-professional-rf-signal-detector-with-alarm-function.jpg" alt="dropship CT15 Portable Wireless Pinhole Camera Professional RF Signal Detector With Alarm Function" /><img data-srcid="-" src="https://image.doba.com/dgd1-dzvUhOnrfPVy/ct15-portable-wireless-pinhole-camera-professional-rf-signal-detector-with-alarm-function.jpg" alt="dropship CT15 Portable Wireless Pinhole Camera Professional RF Signal Detector With Alarm Function" />