The Angelcare Movement and Sound 2-in-1 monitor detects your baby's sound and movement. If your baby is still for 20 seconds, you'll be alerted. Complete with variable sensitivity settings and a unique combination of 8 channels and 2 frequencies, the Sensor Pad emits crystal clear transmission within a 250m range. Both units are mains or battery operated and the rechargeable parent unit is portable for added convenience. Simply clip the small portable parent unit to your belt and monitor your baby on-the-go. Features of the Angelcare Movement and Sound Monitor AC403: Under-the-mattress Sensor Pad: The Sensor Pad monitors all your baby's movements. An alarm will sound if no movement has been detected for 20 seconds. Features variable sensitivity settings. Works on all mattresses except memory foam mattresses. Portable rechargeable Parent Unit: Clip the small portable Parent Unit to your belt and monitor your baby on the go. Battery unit lasts for up to 8 hours, when fully charged. Crystal clear transmission: Enjoy crystal clear sound transmission and security with the unique combination of 8 channels and 2 frequencies. Out of range indicator: With a 250m range, you can go further without losing touch. Alarm sounds if connectivity is broken. Volume control and vibration alert: Adjust the sound levels to suit you and monitor your baby even with the sound off. Temperature display and control: Monitors and shows the temperature in baby's room with the temperature indicator on the Parent Unit. Alarm sounds if the temperature is too high or low. Full colour digital display: The colour LCD screen on the Parent Unit clearly displays a number of monitoring features, so even if the sound is off you'll know what's going on. Nightlight: The halo on the Nursery Unit acts as a soothing nightlight and allows you to check your baby with minimal disruption. Hold and mute: If, for example, you need to feed or change your baby the sound and movement alarm can be temporarily deactivated. Continuous sound monitoring: The Angelcare system can be set to continuous or voice-activated sound monitoring. Microphone sensitivity is adjustable so you can hear all sounds in baby's room or just when baby cries. Please follow the instruction manual when you install this monitor. Place the nursery unit at least 3 feet away from the cot and make sure the sensor pad cord is well out of baby's reach by wrapping it around the leg of the cot and securing it with cable ties.