• Indoor Range: 20 to 99% 0 to 50°C/32 to 122°F • Outdoor Range: -50 to 70C/-58 to 158°F • Accuracy: ±3%, ±1°C/±2°C, 3 seconds per day • Resolution: 1%, 0.1°, 1 minute • Time format: 12/24 hours • Battery Included