Remote Wireless Pool SPA Hot Tub Thermometer w/ Indoor Display Readout Degrees F C 300 Feet 60 day Warranty: Displays Hot Tub, Pool, or Lake water temperature on remote display that you have in your house or Lanai Floating probe also displays pool temperature so no need to get out of pool to read remote displa Display in Degrees F or Degrees C on remote display and floating probe 433MHz transmission distance up to 300 feet (100 meters) Saltwater approved, Waterproof and floating Outdoor transmitter