Wireless Swimming Pool Thermometer IPX8 Waterproof Water Temperature Thermometer
It can be easily opened and closed with a wrench, as detailed in the manual. Pool Sensor Temperature Range: -40°F~140°F(-40°~60°C). Pool Sensor: 6.9"x phi 4.2". Wireless Frequency: 433MHz. Indoor Temperature Range: 32℉-140℉(0-60℃).