2.4 GHz FHSS ENCRYPTED: Worried about baby monitors being easily hacked, their video streams compromised, and scary voices coming on the two-way talk functions and screaming things at babies in the dark? With our 2.4 GHz FHSS encrypted, even if someone else is using a device operating on the same frequency as your Angelcare monitor, that person can’t see or hear what the baby monitor is capturing and transmitting. You can relax knowing no-one can see or hear your baby.4.3'' PARENT UNIT: Screen provides clear night vision and easy access to settings. It displays nursery room temperature and alarms if it goes out of your preferred settings.LOW-PROFILE NURSERY UNIT: Can be placed on a wall or table top, watches over your baby while transmitting a crisp image that is dark or bright in the nursery.SAFE, NON-CONTACT TECHNOLOGY: Because the Movement Sensor Pad is placed under your baby’s mattress, no part of the monitor is touching them. As soon as the Nursery Unit is turned on, the monitor starts tracking movement and will only alarm if no movement is detected for 20 seconds. You can rest assured your baby is sleeping safely because the detector can’t be touched or moved by them.ONE-TIME INSTALLATION TECHNOLOGY: The Sensor Pad tracks all your baby’s slightest wriggles across the entire surface of the mattress without baby even knowing it’s there. It's a simple, one-time installation underneath the mattress, preventing any contact with the sensitive skin of your baby.