The Wireless Floating Digital Pool Thermometer by HEIMVERT features an easy-to-read display with temperature readings in Celsius or Fahrenheit. The thermometer comes with a display unit that reads both indoor temperature and the water temperature. This medium-sized thermometer is IPX8 waterproof, making it perfect for outdoor use in pools or spas. Powered by a battery, this blue thermometer from model SH-212 utilizes thermal measuring technology to provide accurate readings. Made of durable plastic, this wireless floating thermometer is designed for convenient and reliable use in your yard, garden, or outdoor living space.