✲ High Sensitivity - The detector improves sensitivity, professional radio wave detection device, and is the most advanced portable wireless signal detection device. Regardless of the strength of the signal emission, it can be easily positioned by the adjustment knob. The sensitivity is adjustable and the sensitivity adjustment knob is on the right. Clockwise enhancement and counter-clockwise sensitivity reduction. | ✲ Detection Range - It can detect positioners equipped with mobile, China Unicom, Telecom, 2g, 3g, 4g cards. Detect high speed upload GPS locator packet locator. Detect 1.2G, 2.4G wireless camera. Used in hotels, bathrooms, hotels, entertainment venues, changing rooms or regimes. It can also be used for business negotiations, school management, factories, military facilities. | ✲ Way of Use - Turn on the wireless probe knob power switch, the second indicator lights up, and the power supply works normally. Turn the knob clockwise to the maximum position to enter standby mode. After receiving a strong environmental signal, adjust the knob backwards, and the indicator light does not flash for more than the fifth indicator. The signal is full and a beep sounds. When the light bar is full of light, the sound is faster, indicating close to the target. | ✲ Instruction Mode - It can be indicated by a 9-level LED or a tone change indicator. | ✲ About Quality Issues - Fosa is committed to providing users with a perfect buying experience. If users find a non-human factor failure after purchasing the product, you can contact us and we will provide you with a solution for return or replacement. We also guarantee that our products are new and will give you a perfect shopping experience.