Does it detect hidden cameras through walls? The hidden cameras actively emit infrared light with a wavelength above 700 nanometers that is invisible to the human eye. This Hidden Cameras Detector emits infrared light in a specific band and captures the reflected signal. Is it effective against newer camera models? All hidden cameras must rely on 700nm infrared light to fill in low-light environments, otherwise they will not be able to effectively shoot the shooting area. Therefore, This Hidden Cameras Detector can detect all hidden cameras. Does it have any false positive readings? Usually, detectors that use wireless signals or electromagnetic waves may generate false alarms due to electromagnetic waves from other electronic devices (such as routers and Bluetooth devices). This Hidden Cameras Detector uses the most traditional infrared light detection, which can accurately detect in all situations except in strong light environments. Does it alert on its battery level? This Hidden Cameras Detector uses extremely low power consumption technology and can usually be used for more than 30 days on a single charge. When the device is low on power, the light will flash to remind the user to charge. Is it easy to use for non-technical users? This Hidden Cameras Detector adopts a minimalist design. You only need to press and hold the button to turn it on and it is very easy to operate. This is a device that can scan for hidden cameras. It is designed to prevent hidden cameras from secretly photographing users in places such as travel, hotels, and indoors, and to prevent users' privacy from being leaked.