Power supply: DC1 .5V one 7# Alkaline battery(optional);Indoor temperature -30°C~ + 50°C;Outdoor temperature -50°C~ + 70°C;Relative humidity: 20%~90% RH;Resolution: Temperature: 0.1°C ;Humidity: 1;Accuracy: Temperature:±1°C;Humidity:±5%RH
Power supply: DC1. 5V one 7# Alkaline battery (optional);Indoor temperature -30°C~ + 50°C(-22°F~+ 122°F);Outdoor temperature -50°C~+ 70°C (-58°F~+ 158°F);Resolution: 0.1°C;Accuracy:±1°C