Temperature and humidity tester WADFOW WTM3501

Ambient temperature: -20°C ~ 60°C (-4°F ~ 140°F) Ambient humidity: 0~100% Web lamp temperature: -20°C ~ 60°C (-4°F ~ 140°F) Dew point temperature: -20°C ~ 60°C (-4°F ~ 140°F) with backlight function with low battery signal function packed in a color box