AcuRite’s 24” Illuminated Outdoor Clock with Thermometer and Humidity Sensor delivers beauty and function, day or night. It features an integrated light sensor that automatically activates a warm, ambient backlight during dark conditions. Durable all-weather construction makes this a functional addition to any patio or garden. The stylish, sleek design makes it perfect for indoor décor as well. It also features reliable quartz crystal movement, accurate temperature and humidity readings, and easy-to-read Roman numerals. The thermometer measures temperatures from 0 to 100 degrees F. The humidity sensor readings range from 1 to 99 percent relative humidity. This clock includes an instruction manual and an integrated keyhole hanger for effortless wall mounting. The backlight requires 4 D alkaline batteries; the clock requires 1 AA alkaline or lithium battery (not included).