No. If your pool has a stone, concrete or slate skimmer cover, you will need to remove the concrete skimmer lid to install the SENSE. After you install the SENSE, the SENSE becomes your skimmer cover.
If a stone, concrete or slate cover is placed on top of the skimmer where the SENSE is installed, the SENSE will not work. These materials block Wi-Fi and Bluetooth connectivity which the SENSE needs to communicate with your Wi-Fi network.