900 Feet Transmission RangeThanks to the latest 2.4GHz FHSS technology for super-stable, ultra-secure connection,parents can get stable videos anytime,even outside the house.Note: Supports 900ft max in an open area | Multi-Camera ExpandabilityUp to FOUR cameras can be supported at once, which could help you see 4 different rooms’ views at the same time with extended cameras (not included). | High Defenition Image Day & NightEnhanced night vision up to 32ft in pitch-dark. 9 INVISIBLE built-in infrared LED creates an ideal sleeping environment without disturbing your baby. |