1.Open the lid.adjust the vent. put in chemical tablets 2.Thermometer The pool dispenser has a thermometer that can read Celsius and Fahrenheit, allowing you to better understand the pool temperature when cleaning the pool. 3. The swimming pool dispenser with thermometer can help you toreduce cleaning and maintenance time,keep your pool or spa cleankeeps algae, bacteria and bad odors away, allowing you to enjoy comfortable and clean water.Usage steps: 4. Put in water Package includes: 2 x Chlorine Dispenser Features: Material: PP Features: High quality materialClear scale Easy to useuse Adjustable flow vents Read more Large capacityThe pool dispenser has a large capacity, which can hold up to 100 ml.20-25 1 inch chlorine or bromine tablets, so you don't need to change chemical tablets frequently, which is very convenient!Adjustable vent There are 10 vents at the bottom, and the release speed of chemical tablets can be controlled by rotating the bottom, which can clean the pool for a long timeperiod. Product Description Pool Dispenser lets you enjoy clean water!The swimming pool can be a pleasant experience during the summer.It is hot, but proper cleaning and maintenance is also very important.