The weather can have a major impact on your activities throughout the day, and the AcuRite Indoor/Outdoor Thermometer with Wireless Temperature Sensor and Humidity Hygrometer delivers indoor and outdoor temperature and humidity measurements. Staying informed of essential environmental conditions and room temperature can help you plan your day with confidence. The digital temperature gauge is easy to read, and its compact size makes it convenient to place on any counter, shelf, or wall of your choice, making it easy to incorporate into your daily routine. The indoor/outdoor thermometer is a great addition to any home and a great gift idea for Father's Day, Christmas, or birthdays. Checking the temperature and humidity will help you make better decisions on what to wear outside or what activities to plan for the day. It can also help you maintain healthy, comfortable indoor conditions for your family and pets and protect your home and property from moisture damage that can occur from humidity levels that are too high. This wireless indoor/outdoor thermometer runs 4 AA batteries (not included). Mfrs. limited 1-year warranty.Manufacturer model #: 00611A2. Digital thermometer: Monitor indoor and outdoor temperature directly from indoor room thermometer Hygrometer: Humidity gauge lets you track comfort levels inside and outside your home Wireless: Weather-resistant humidity and temperature sensor works indoor or outdoor Accurate: Wireless thermometer comes precalibrated for precise temperature and humidity readings Easy to read: Large thermometer screen lets you check weather conditions at a glance