The AC403 Movement & Sound Baby Monitor watches over you baby when you cant, even the slightest of movements. The portable Parent Unit offers a range of features which have been designed to offer optimal peace of mind. Model number: ac403. Under-the-mattress movement sensor pad: the sensor pad monitors all your babys movements, even the slightest ones. Batteries are optional for the baby monitor (not included). Variable sensitivity settings: sensitivity may need to be adjusted as your baby grows and becomes more active. Portable & rechargeable parent unit: clip the small portable parent unit to your belt and monitor your baby on the go. Monitor features: Analogue signal. 8 channels. Up to 250m range and out of range indicator. 1 parent unit included - portable. Mattress sensor pad - . Night light - to sooth and comfort baby. Temperature display - for added peace of mind. Power features: Baby unit: ac adapter. Parent unit: nimh. Power saving mode. Low battery indicator. Parent unit includes mains adaptor - batteries required for parent unit 2 x rechargeable (included). Baby unit includes mains adaptor - batteries required for baby unit 1 x . General information: