... sets of data, fulfilling historical inquiry and online real-time monitoring through monitoring software, dynamic display, with the maximum, minimum, and mean indicators ... (Backlight shut off) 27.Weight : 1443g(with batteries) 28.Working Temperature & Humidity: -10°C~40°C, below 80%rh 29.Storage ... Temperature & Humidity: -20°C~60°C, below 70%rh 30.Overload ...