Minecraft wiki entry for Sculk_Sensor, associated text: Multiple Sculk sensors with other sculk type of blocks on Minecraft Live.
Ditto. Screenshot by kingbdogz.
Close look.
Wool occlusion.
Sculk sensors as wireless redstone.
Sculk sensors are not affected by rain.
Old textures.
New textures.
Performance optimizing.
Ditto.
Sculk type of blocks in redstone category.