Abstract: A power saving tracking system and a power saving method of using the same is disclosed. A tracking device uses at least one positioning module to endlessly record the plurality positional coordinates at a plurality positioning time points. The tracking device upload the positional coordinates and the positioning time points to a cloud server for training at least one power saving mode. The power saving mode includes at least one limited geographical range, at least one limited period, and transmission setting of the wireless transmission module. The cloud server transmits the power saving mode to the tracking device. A processing module of the tracking device determines whether to upload a present positioning time point and a present positional coordinate to the cloud server according to the power saving mode. The present invention reduces the frequency of transmitting information to the cloud server and to decrease power consumption.

Abstract: A display device includes a chassis, an electronic module, and a waterproof breathable member. The chassis has a front frame and a rear cover installed on the front frame. The rear cover has a plurality of heat-dissipating holes and an intake port, and the chassis is configured to allow a heat-dissipating airflow to pass through the accommodating space via the heat-dissipating holes and the intake port. The electronic module arranged in the chassis has a circuit board, and the heat-dissipating holes are arranged above the circuit board. The waterproof breathable member is disposed on an inner surface of the rear cover and entirely shields the heat-dissipating holes, so the heat-dissipating airflow only passes through the waterproof breathable member when the heat-dissipating airflow flows out of the chassis via the heat-dissipating holes. The waterproof breathable member is configured to avoid any liquid flowing into the chassis via the heat-dissipating holes.