Daylight Detector is crafted from six nether quartz, three wood slabs (any species), and three glass blocks arranged in three rows on the crafting grid (glass on top, quartz in middle, slabs on bottom), yielding one block per recipe. The crafted item is a half-block-thick disc that sits flush with whatever surface it is placed on, with three glass-domed sensors on the top face that visibly track the sun's position.

The block emits a redstone signal proportional to the current sky-light level: signal strength fifteen at noon under clear sky, decreasing as evening approaches, and zero at night. Right-clicking inverts the behaviour, switching to a night-mode variant that emits maximum signal at midnight and zero at noon — useful for automatic streetlight controllers that activate after dusk. Common uses include automatic doors that close at night, sky-light-driven brewing-stand timers, and chunk loaders that activate redstone clocks only during the day. The block must have direct sky access above; placing it under a roof returns zero signal.