It’s tough being a parent. You can’t help but worry about your baby every minute of every day, even when your baby is sleeping soundly. But we can help remove some of that concern with the Angelcare AC300 movement monitor. This movement only monitor detects sound & movement, so if your baby is still for 20 seconds, you’ll be alerted. It is a great addition if you already have a sound monitor or if you would like to monitor more than one baby in separate beds. Underthemattress Sensor Pad The Sensor Pad monitors all your baby’s movements, even the slightest breathing movements. An alarm will sound if no movement has been detected for 20 seconds. Features variable sensitivity settings. Audio ‘tic’ feature The optional ‘tic’ sound feature reassures you that the monitor is working even when your baby is sleeping silently. Batteries operated It works on 2 x AA standard batteries. The low battery indicator will let you know when you need to change the batteries (approx. every 3 to 4 months). Whats Included: 1 x Nursery Unit 1 x Underthemattress Sensor Pad 1 x Instructions Manual What else do you need? 2 x AA standard batteries (for Nursery Unit)