Fangrui Product Details The Audio Baby Monitor Can Provide Clear And Interference-free Sound Transmission And Effectively Background Noise, Ensuring That You Can Clearly Hear Your Babys Movements Even In Different Rooms , With A Maximum Communication Distance Of Up To 400m. Equipped With A Sound Indicator And A Two-way Intercom Function, You Can Understand The Sound Intensity In The Babys Room Through The Led Indicator Light Of The Parent Unit, And Have Two-way Conversations With The Baby Through The Built-in Intercom To Keep An Eye On The Babys Condition At Any Time. Infrared Night Vision Can Automatically Switch To Night Vision Mode When The Light Is Insufficient. There Are No Red Dots In The Dark, Ensuring That The Night Vision Picture Is Clear While Protecting The Babys Peaceful Sleep. Suitable For Night Use. Both Parent And Baby Units Can Control The Night Light Switch To Provide A Safe Sleeping Environment For Babies. Offering Adjustable Sound Sensitivity, You Can Choose To Hear Sounds From Your Nursery Continuously Or On