The Dual Solar Panel Pro 5-in-1 Upgrade is a replacement assembly with enhanced features for the AcuRite 5-in-1 weather sensor (sold separately).The upgrade optimises the measurement of the temperature throughout all hours of the day.The assembly includes dual solar panels to maximise the sensor's exposure to the sun and to allow the sensor's solar-powered aspirating fan to run more often.The sensor's internal fan helps internal airflow to ensure accurate ambient temperature readings.The assembly is easy to instal with basic tools.One-year limited warranty.Includes pro weather sensor assembly and installation guide.