The Brinno PHV133012 Digital PeepHole Viewer comes with image recording function, recording the visitor"s photo on a Micro SD card (not included). Installing the option Motion Sensor and Knocking Sensor, will record the visitor"s photo even when you aren"t at home. Plus, the Brinno PHV133012 Digital PeepHole Viewer comes equipped with night view mode, allowing you to see a brighter image in a low light environment.