·【Upgraded Waterproof Protection】This wireless pool thermometer features an advanced IPX7 with a heavy-duty silicone sealing ring which provides double waterproof protection. Before placing it in water, please tighten the cover as possible as you can

·【Long Range Transmission】Firelex digital pool thermometer features a stable transmission range of up to 300 ft. The indoor temperature and humidity monitor can be connected to 3 outdoor sensors (The package comes with 1 sensor), so you can monitor water temperatures for different environments

·【High-Precision】Built-in high-precision sensor, the temperature error range is within ±1.8℉(1℃). The temperature measurement range of outdoor pool sensor: -40℉~158℉(-40℃~70℃). Indoor receiver temperature measurement range: 14~140 °F(-10~60 °C). The probe samples every 10 s allows you to stay informed of water temperature in real-time. Sensitive response, reliable and stable

·【Multifunction & Easy to Read】The indoor monitor not only displays water temperature but also detects indoor temperature and humidity. You can also check the maximum and minimum water temperature in past 24 hours or all time via the indoor monitor. Supports ℉ and ℃ switching

·【Wide Range of Applications】The floating pool thermometer adopts unique retro green color and exquisite appearance design. It is perfect for monitoring the temperatures of swimming pools, hot tubs, aquariums, fish ponds, Ice baths, etc