AcuRite 06014 PRO+ 5-in-1 Weather Sensor with Rain Gauge, Wind Speed, Wind Direction, Temperature and Humidity High-precision 5-in-1 wireless weather sensor accurately measures the temperature, humidity, wind speed, wind direction and rain Maximum ambient temperature accuracy with an internal fan powered by two solar panels. Temperature range -40 to 70 degrees celsius Sensor data is transmitted every 36 seconds using 433 MHz wireless signal up to 330 foot (100 meter) range Requires 4 AA alkaline or lithium batteries (Batteries not included) Compatible with AcuRite smartHUB (sold separately) and any AcuRite 5-in-1 weather station display (sold separately; full list below)