The Angelcare monitor (model AC401) brings you all of the safety and security that the original Angelcare monitor did but with the added benefit of it being a rechargeable monitor! The Angelcare combines a quality sound monitor and a movement monitor in one single system. Whether your baby is awake or sound asleep, Angelcares under-the-mattress sensor pad will detect all of your babys movements - even the slightest breathing movements! The sensor alarm works in such a way that if movement is not detected after 20 seconds then an alarm will sound to alert you to the situation. 8 channel options. Digital colour LCD display on the parents unit. Babys room temperature digital display on the parents unit. Sensitivity switch located at the back of the baby unit can be used as your child grows and moves off the pad more. The baby unit also comes equipped with a pager, which if pressed will locate you to where the parent monitor is if lost at any time.