Features: Real time monitoring the temperature and humidity of your home. Adopt high- digital temperature and humidity sensor, which can quickly and accurately detect temperature and humidity changes. Small size and lightweight with compact and delicate designed. Simple looking with smooth edges, suitable for putting in the room of baby or the elder. Indicate the temperature and humidity level with a emotion icon. Adopt and reliable environmental protection material without peculiar smell. The ABS material is durable, wear-resistant and fall-proof. Specifications: Material: ABS Temperature : -50~70℃ (-58~158℉) Temperature Accuracy: ±1℃ (1.8℉) Humidity : 10%~99%RH Humidity Accuracy: ±5%RH Power Supply: 1 * CR2032 button battery Item Size: 43 * 43 *13 mm / 1.69 * 1.69 * 0.51in Item Weight: 30g / 1.06oz Package Weight: 80g / 2.82oz Package Size: 6 * 6 * 3cm / 2.36 * 2.36 * 1.18in Packing List: 1 * Test Meter