The reset button on a CamHi camera can typically be found on the back or bottom of the device. It is usually a small, recessed button that can be pressed using a paperclip or similar tool. It is important to refer to the user manual for the specific model of CamHi camera you are using, as the location of the reset button may vary. Generally, holding down the reset button for a certain amount of time (usually around 10 seconds) will reset the camera to its factory default settings.