The Extech 445702 features three displays for time, temperature, and humidity. The clock shows both 12 and 24-hour time. Includes a maximum/minimum with a reset mechanism. The humidity ranges from 10% to 85% RH ± 6% RH, while the temperature ranges from -10°C to 60°C ± 1°C (14°F to 140°F ± 1.8°F). Comes with a built-in tilt stand, wall mounting bracket, and AAA battery