The Angelcare Deluxe Movement and Sound Monitor, AC401-2P gives you everything you need for peace of mind when you are away from the nursery. This Angelcare Deluxe Monitor helps make your job as a parent a little easier. With advanced features, this baby movement monitor can monitor both movement and sound. A sensor pad with adjustable sensitivity slides under the baby's mattress to detect movement, and if there is no movement, the Anglecare Movement Sensor with Sound Monitor sounds an alarm after 20 seconds. An optional ''tic'' sound lets you hear baby's movements and the Angelcare Deluxe Monitor offers eight channels to choose from to minimize interference. The Angelcare Deluxe Movement and Sound Monitor, AC401-2P comes with two parent handsets, eight AAA rechargeable batteries, two charging station and movement sensor pad.