• Easy to read dial indicators for both humidity and temperature in °C/°F • Ranges: 25 to 80% RH and -20 to 40°C/-4 to 104°F • Resolution: 5% RH, 1°C/2°F • Accuracy: ±5% RH from 25 to 70%, ±8% RH from 70 to 80%; ±2°C/±3.6°F • Use for monitoring indoor room conditions. • Metal coil sensors. • No batteries or external power required. • Dimensions: 5” dia. x 1”D. • Plastic face. • 1 year warranty.