The TCL Google TV supports the parental control function.
Below are the steps about how to set up the parental control for your reference:
1. Press the settings   button on the remote.
2. Select Settings --> System --> Parental Controls:
3. Set up the Parental Controls based on your requirement.
Channel Lock: Switch the channel needs to input the password if your TV has the TV signal inputs.
Parental Ratings: Lock the program based on age for the DTV signal.
Inputs lock: Switch the inputs need to input the password.
TV Buttons Lock: The physical power button and the microphone button will be locked.
Channel Scan Lock: Channel scan will be locked.
Change Password: Change the parental controls’ password.
Max Volume: Set up the max volume of the TV.