Daylight Detector

A daylight detector is a block that outputs a redstone signal based on its exposure to sky light.

Using the detector inverts it, causing it instead to output a constant strong signal that weakens from exposure to sky light.

Daylight detectors can be mined by hand or with any tool, but axes are the quickest. Inverted daylight detectors cannot be collected directly; they drop a regular daylight detector. In Bedrock Edition, the inverted detector may be obtained by using pick block in Creative mode[1], or via inventory editing or add-ons.