Feature: 1. Both the display unit and temperature unit are made of plastics material, with a simple and beautiful appearance, and can provide long service time. 2. Digital LCD display unit with backlight, and the backlight illuminates for 10 seconds per trigger for clearer and more accurate data reading, with a clear definition. 3. With time display function, time display 12/24Hr format optional; indoor temperature, humidity maximum, minimum value query; outside temperature maximum, minimum value of the same screen display; outside temperature comfort indication; with low power detection function. 4. The temperature testing unit has wide measuring ranges, with indoor measuring ranges from -9.9℃ to+ 50℃(14.2℉～122.0℉) and out-of-door measuring ranges from -40℃ to +70℃(-40℉～158.0℉) . 5. Units are freely switchable, you can choose Fahrenheit / Celsius according to your user preference. 6. It can support 3-channel temperature control, support connection of up to 3 pool thermometers, with a transmission distance of 60 meters (unobstructed distance), displaying the maximum and minimum values. 7. IPX7 waterproof grade, built-in silicone waterproof rubber ring; products with traction line. 8. Easy to use, just put into the swimming pool to measure its temperature, suitable for swimming pool, hot spring, water world, etc. Specification: Both the display unit and temperature unit are made of plastics material, with a simple and beautiful appearance, and can provide long service time. The temperature testing unit has wide measuring ranges, with indoor measuring ranges of -9.9℃ to+ 50℃(14.2℉～122.0℉) and -40℃ to +70℃(-40℉～158.0℉) out-of-door measuring ranges. It can support 3-channel temperature control, and support connection of up to 3 pool thermometers, with a transmission distance of 60 meters (unobstructed distance), displaying the maximum and minimum values. Suitable for swimming pools, hot springs, water world, etc. Features: Both the display unit and temperature unit are made of plastics material, with a simple and beautiful appearance, and can provide long service time. Digital LCD display unit with backlight, and the backlight illuminates for 10 seconds per trigger for clearer and more accurate data reading, with a clear definition. With time display function, time display 12/24Hr format optional; indoor temperature, humidity maximum, minimum value query; outside temperature maximum, minimum value of the same screen display; outside temperature comfort indication; with low power detection function. The temperature testing unit has wide measuring ranges, with indoor measuring ranges from -9.9℃ to+ 50℃(14.2℉～122.0℉) and out-of-door measuring ranges from -40℃ to +70℃(-40℉～158.0℉) . Units are freely switchable, you can choose Fahrenheit / Celsius according to your user preference. It can support 3-channel temperature control, support connection of up to 3 pool thermometers, with a transmission distance of 60 meters (unobstructed distance), displaying the maximum and minimum values. IPX7 waterproof grade, built-in silicone waterproof rubberring; products with traction line. Easy to use, just put into the swimming pool to measure its temperature, suitable for swimming pool, hot spring, water world, etc. Specifications: Name: Swimming Pool Thermometer Set Material: plastics Battery: 2 * 1.5V AAA battery (not included) Indoor measuring ranges: -9.9℃ to+ 50℃(14.2℉～122.0℉) Out-of-door measuring ranges: -40℃ to +70℃(-40℉～158.0℉) Indoor humidity: 20-95% Temperature and humidity detection period: 30 seconds Package size: 150 * 150 * 110mm / 5.91 * 5.91 * 4.33in Package weight: 350g / 12.35ounce Packing List: 1 * Host 1 * Measurement Unit 1 * Rope 1 * Manual Package List: 1 * Host 1 * Measurement Unit 1 * Rope 1 * Manual