The Infant Optics DXR-8 Video Monitor is the first baby monitor with interchangeable lens technology. Three separate lens types normal, wide angle (sold separately) and zoom allow you to choose the most suitable focal length and viewing angle for the specific environment, just like a professional camera system. Video is streamed in real-time to a compact 3-1/2 in. LCD color display providing a crystal clear image. The DXR-8 is packed with a roster of advanced features for added convenience including remote camera pan/tilt, infrared night vision, talk-back function, room temperature sensor and more. A product usage procedure note has been incorporated in units shipped since March 2015 that explains this new software update where you can toggle the beeping warning alerts. Please see attached pdf file.