The AcuRite illuminated 24-inch thermometer clock with thermometer and humidity gauge delivers beauty and function, day or night, indoors or outdoors. This large weather-resistant wall clock features an integrated light sensor that automatically activates a warm, ambient backlight during dark conditions. Durable all-weather construction makes this outdoor thermometer clock a functional addition to any patio, pool area, or garden. The stylish design also makes it a perfect accent for any indoor space as a living room clock, family room clock, or foyer clock. It also features reliable quartz crystal movement, accurate temperature and humidity readings, and easy-to-read numbers. The thermometer measures temperatures from -40 to 140 degrees Fahrenheit, while the humidity sensor readings range from 1% to 99% relative humidity. This AcuRite thermometer clock includes an instruction manual and has an integrated keyhole for effortless wall mounting. The backlight requires four D alkaline batteries; the clock requires one AA alkaline or lithium battery (all batteries not included). AcuRite recommends lithium batteries for temperatures below -4 °F (-20°C). This thermometer clock is an ideal gift for Christmas, Father’s Day, or birthdays and comes with a one-year limited warranty.