About this item This is an ordinary charging block equipped with a high-definition camera. (Note: In compliance with federal law and Amazon policy, the camera does not record sound.) It is recommended to insert a Micro SD card so that you can view the playback online after connecting to WiFi. The camera will automatically detect motion and will push you a message after detection. The sensor sensitivity can be adjusted in the APP. At night or in a dark environment, you can still view the surveillance screen. With a little light, the camera will record better. The camera supports loop recording, and the latest video will automatically overwrite the oldest video. If you have any questions, please contact our enthusiastic and professional after-sales service