The deluxe version Angelcare will still detect a baby's slightest movements, even while she sleeps, and sound an alarm if no movement whatsoever is detected for 20 seconds. This new deluxe model has many added features. The nursery unit has a soft nightlight and room thermometer. Its temperature is displayed on the parents units, which can alert you when the temperature falls out of your preset range. This comes with additional new features which includes an out of range indicator, a parent's unit locator, optional voice activation and a color LCD on each Parent's unit which displays all the data. Each Parent's unit comes with 4 AAA rechargeable batteries and a charging base. This monitor continues to offer an optional tic feature. It will tick if movement is detected. This comes with additional features which include sound lights and movement indicator lights. The new Deluxe Angelcare model operates on both 900 MHz and 2.4 GHz frequencies. Its sound monitor operates on the 900 MHz frequency so there is no interference from 2.4 GHz equipment. The monitor has 8 channels and an 820' range. This includes ac adapters and battery backup option.