First, plug the Ma Yin temperature control socket into the power supply. Then, insert the fish tank heating rod into the temperature control socket. Next, observe the current water temperature displayed on the display screen of the temperature control socket. Set the heating temperature by pressing the key, and adjust the temperature as needed. The temperature control socket will automatically cut off the power supply according to the set temperature. When the water temperature reaches the set temperature, the temperature control socket will automatically cut off the power supply to prevent the fish tank from being damaged by excessive temperature.