Features: Real-time monitoring of the temperature and humidity in your home. Equipped with a digital temperature and high-precision humidity sensor for fast and accurate detection of environmental changes. Compact, small size and lightweight design with smooth edges, ideal for placement in a baby's or elder's room. Displays temperature and humidity levels with intuitive emotion icons. Made from safe, environmentally friendly materials with no unpleasant odor. Constructed with durable, wear-resistant, and drop-resistant ABS material. Material: ABS Temperature Range: -50°C to 70°C (-58°F to 158°F) Temperature Accuracy: ±1°C (±1.8°F) Humidity Range: 10% to 99% relative humidity Humidity Accuracy: ±5% RH Power Supply: 1 x CR2032 button battery Item Size: 43 x 43 x 13mm / 1.69 x 1.69 x 0.51in Item Weight: 30g / 1.06oz Package Weight: 80g / 2.82oz Package Size: 6 x 6 x 3cm / 2.36 x 2.36 x 1.18in Packing List: 1 x Test Meter