Add a second camera to your Visio Care baby monitor if you are parents of twins or more than one young child, or if you are a nurse or babysitter. Up to four cameras at a time can be used with the Visio Care Baby Monitor. It has a range of 300M, a directional camera, a zoom function of 100% and 200%, high definition video, a temperature sensor, a night light and night vision. Monitor features: Digital signal. Up to 300m range and out of range indicator. - portable. 2 way talk - allows you to reassure and comfort from another room. Night light - to sooth and comfort baby. Video features: Tilt and zoom function. Features infra red night vision so you can see your baby in the dark. Power features: Baby unit: mains and battery. Baby unit includes mains adaptor - batteries required for baby unit 4 x AA (not included). General information: Manufacturers lifetime against defects only guarantee.