1. Noise Detection: When the noise in the baby room is below 40db for more than 20 seconds, voice will be enabled and the monitor will cancel the slight background noise, until the noise exceeds 40db, the monitor will wake up and it will let you know exactly when your baby makes any sound. 2. Two Way Intercom: 2.4GHz digital signal, built in microphone and speaker, you can talk to your baby from a distance without running back. 3. Wireless Point to Point Transmission: Digital signal transmission, stable without interference, digital signal encrypted transmission, good security. 4. Night Light: This audio baby monitor has a night light, which can be controlled remotely, making it more practical and convenient to use. 5. Long Battery Life: The built in lithium battery in the baby care device has a capacity of 500mAh, and the standby time is up to 20 hours, and the battery life is long. How to use: 1. Insert the adapter into the power socket. Connect the small end of the USB power cable to the parent device of the DC port. The power LED indicator will turn red. 2. Long press the power on key for 2 seconds to open the parent unit. The power LED indicator will light up green to indicate. 3. Once both the baby unit and the parent unit are open. The parent unit will transmit the audio captured by the baby unit. 4. If there is no connection or you are out of range, the audio will be turned off and the parent unit will beep quickly after the failure to re establish the link. Move the parent unit closer to the baby unit until the link is re established. 5. Press and hold the power button to power off the parent device. US Plug Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. voltage: AC110V Material: abs colour: White Package Contents: 1 x Baby unit device 1 x parent unit d