Daveyspa Pool Thermometers Provide Accurate Reading in Both Fahrenheit and Celsius. Maximum Temperature 120F and 50C. Duck Style Swimming Pool Thermometer, Exceptional Quality, Built from Durable Material & Shatter Resistant. Clear Temperature Reading Display in Fahrenheit and Celsius. Reads Up to 120 Fahrenheit and 50 Celsius. Ideal as a Pool Water Thermometer, Pool Spa Thermometer, Hot Tubs, Fish Ponds, Aquariums and All Other Types of Systems. Complete 1 Year Warranty. If You Are Not Happy With Your Purchase We Will Issue a 100% Refund – No Questions Asked!