Main Features:
【164 Feet Bluetooth Range】 This Inkbird pool thermometer features a Bluetooth function to pair with your phone for remotely monitoring.
【Data Storage】 This Bluetooth thermometer is capable of saving up to 30000 points of historical data in 2 years. You can easily check all changes in the temperature on the app graph.
【IPX7 Water-Resistant Design】This thermometer is designed with a compact body that adopts IPX7 waterproof material. And, there is a silicone sealing ring placed on the opening, preventing water seepage.
【Instant-Read & Accurate Probe】Temperature range: -40~70℃. The thermometer has adopted high-quality materials, solid and durable. It’s ideal for measuring the water temperature in the swimming pool, hot tub, aquarium, baby bath, spas, etc.
【Fine Design】 You can check the measured temperature, battery capacity, and max/min values on the LCD screen with one look. Support both Fahrenheit and Celsius readings.
And wireless pool thermometer Deal Price: $26.90
22% code: INKBIRD222
https://www.ebay.com.au/itm/224489998817
Mine died after a year. Wouldn't recommend.
Also can't connect to any smart ecosystem