A:AnswerThe camera plug is a standard USB A with a USB power adapter. You should be able to use a different USB power adapter / charger designed to be used in the country you are traveling to. It just needs an output similar to the original (5v with a current rating of at least 2000mA).
A:AnswerThe range depends on your Wi-Fi network strength. It doesn't use radio frequencies like other monitors. I believe Bluetooth is the backup if Wi-Fi is down.
A:AnswerThe Nanit app supports multiple paired cameras. If you have multiple Nanit cameras paired to your account, you can switch between them by tapping your child’s name at the top of the Live, Activity, and Nights tabs.