Actuating and sensing apparatus and casing using the same

A casing for using in an electronic device, the casing comprising:

• an actuating and sensing apparatus including a circuit board, a housing, an actuating device and a sensor, wherein the housing is disposed on the circuit board and comprises an entrance opening, an exit opening and a compartment, the compartment is in communication with an external environment outside the housing through the entrance opening and the exit opening, the actuating device is disposed within the compartment and closes the exit opening, and the sensor is disposed within the compartment and corresponding to the entrance opening;
• a plate including a bottom surface, a first opening and a second opening, wherein the housing of the actuating and sensing apparatus is attached on the bottom surface, the entrance opening is aligned and in communication with the second opening, and the exit opening is aligned and in communication with the first opening;
• and
• a lateral wall connected to the plate;
• wherein when the actuating device of the actuating and sensing apparatus is enabled, a gas within the compartment is guided to an external environment outside the casing through the exit opening and the first opening, and a pressure gradient is generated in the compartment so as to introduce a gas from the external environment outside the casing into the compartment through the second opening and the entrance opening to make the gas monitored by the sensor.

An actuating and sensing apparatus, comprising:

• at least one circuit board;
• at least one housing disposed on the circuit board and comprising at least one entrance opening, at least one exit opening and at least one compartment, wherein the compartment is in communication with an external environment of the housing through the entrance opening and the exit opening;
• at least one actuating device disposed within the compartment and closing the exit opening;
• and
• at least one sensor disposed within the compartment and corresponding to the entrance opening;
• wherein when the actuating device is enabled, a gas within the compartment is guided to an external environment outside the housing through the exit opening, and a pressure gradient is generated in the compartment so as to introduce a gas from the external environment outside the housing into the compartment through the entrance opening to make the gas monitored by the sensor.