Usage: Indoor Dual readouts in one dial. Dependable reading with high accuracy. Convenient size and quality construction. Color indicator for comfort. With back hole for wall mounting. Proper range design makes this thermo-hygrometer suitable for monitoring typical indoor and outdoor weather conditions. It can be used in offices, restaurants, hotel lobbies, gardens, classrooms, laboratories, workshops, and homes. Product colors are shipped randomly. Specifications: Temperature Measuring Range: -20°C to 100°C Temperature Measuring Accuracy: ±1°C Humidity Range: 0%–100% RH Humidity Measuring Accuracy: ±7% RH (30–80% RH) Dimensions (D × H): 80 × 20 mm / 3.15 × 0.79 inches Package Includes: 1 × Indoor Wall Thermometer Hygrometer (random color) Notes: Do not mount or place near air conditioner ventilation openings. Install in a well-ventilated, open area for accurate average readings. Do not use corrosive liquids for cleaning.