B-hyve sprinkler catch cups/cans are engineered for accurate sampling of the rate at which sprinkler heads distribute water, as well as the uniformity with which they distribute that water. The rate at which sprinklers from different manufacturers apply water can vary significantly, and the way you design the system can accentuate those differences. A catch cup test will provide an accurate average precipitation rate and assist you in scheduling and identifying areas within a sprinkler zone which are receiving too little or too much water. The web app, wateringschedule.com, allows you to input catch cup levels, automatically calculate the precipitation rate and uniformity for each zone, and create an efficient watering schedule. You can also directly input the cup data into the B-hyve app associated with each B-hyve controller. Each catch cup pack comes with a set of 12 catch cups and 12 stakes for holding the cups. Each reusable catch cup has measurement markings in both milliliters (mL) and inches (In). For larger zones, you may want to order additional cups to enhance the accuracy of results. Please note that, in cases where sprinklers from multiple sprinkler zones hit a watered area, it is important to run each of those zones for the same amount time in order to get an accurate precipitation rate for that area. More instructions can be found in the user manual. Compatible with controllers from Orbit, Hydro-Rain, and other major brands. For outdoor irrigation use with cold water only.