The pool chlorine dispenser floats easily on the surface of the pool to distribute chlorine evenly, so you don't have to worry about chlorine levels in your pool. The locking cap securely holds the chlorine tablets, providing a safer and more enjoyable pool experience. The dispenser is designed with ports on the side to control the amount of chemicals released from the dispenser. You can control the cleaning speed level through the ports according to the actual situation of the pool. Just open the lid and slowly add chlorine tablets, and put it into the pool after adjusting the outlet. This dosing device with a diameter of 5 inches works well for in-ground pools, massage tubs, spas, above-ground pools, ponds, etc. The built-in thermometer shows temperatures in °F and °C. Since the dosage of chlorine and other pool care products is highly dependent on temperature, the chlorine dispenser has its own thermometer. This pool accessory is suitable for most commercially available steel frame pools or rapid pools and many other types of pools. Chlorine Dispenser for Swimming Pool, Pond, SPA This chemical dispenser with thermometer not only helps you dispense metered additives into your pool, but also control the water temperature. Properly dosed administration of chemicals into the pool ensures a long shelf life of the pool water, it protects the health of your family and allows them to enjoy the summer.Good quality product