The Tropf-Blumat Watering System is a fully automated plant watering system that uses ceramic technology to automatically water your plants without the need for electricity. Safe, simple, and reliable. The Tropf-Blumat Water Sensor routinely senses the water requirements of your plants and waters only as they need it. By self-adjusting due to weather changes, Tropf-Blumats keep plants perfectly watered. Easy to install, they are reliable and operate for years.