A:AnswerThe Nest Learning Thermostat 3rd Gen is designed to work with most 24V systems. It supports up to three stages of heating and two stages of cooling for conventional systems, and two stages of heating and cooling with auxiliary heat for heat pumps. To make sure your system is compatible, please use our online compatibility checker here: https://store.google.com/us/widget/compatibility/thermostat
A:AnswerNest Learning Thermostats have occupancy sensors to detect when someone is in a room for comfort optimization and energy saving but it doesn't send alerts for unwanted guests as it doesn't have a camera.
A:AnswerNo, it is not difficult. All you need to do is to install the Nest app on your new phone and log into your Nest account with your account credentials.
A:AnswerI think that's going to come down to which wires you currently have available to your thermostat. Next requires a few, which you can find online.
A:AnswerHey there, Neeraj. Thanks for your inquiry on the Nest learning Thermostat. We want to know more about your concern, please reach out to our dedicated team of specialists on the Google Help Center page here: https://support.google.com/googlenest/gethelp
A:AnswerI am not sure what you mean by locked.
The thermostat is accessible through your app if you are authorized or have access to a password controlled account.