2.4GHz 2.5 inch Digital Video Baby Monitor with Four Cameras. 200 meter range with "out-of-range" warning In order to ensure proper functioning of night vision please make sure a light is not shining on the parent unit where the sensor is located as the unit will not know whether night vision is needed. 3.5" color video display, Digital technology, pan, scan and zoom, 2-way talk back feature. The baby monitor receiver has 4 channel selections that can support 4 different cameras at the same time. An affordable video baby monitor allows you to see and hear your baby day and night from now on!