LCD Digital Wireless Weather Clock with DualMount Wind Sensor Thermohygrometer Temperature Humidity Meter Item Type: Weather Clock Material: ABS Color: Silver Weight: Approx. 1048g / 37oz Application: for Indoor and Outdoor Use Indoor Temperature Range: 0~50℃ (32~122℉) Outdoor Temperature Range: -40~60℃ (-40~140℉) Temperature Accuracy: ±1.0℃ Humidity Range: 20%-90%RH Temperature Display Unit: ℃/ ℉ Selectable Humidity Accuracy: ±5% Wind Direction: E, S, W, N, SE, NE, SW, NW Wind Direction Accuracy: ±10º Wind Speed: 0~50m/s Accuracy: 0.1m/s Wind Speed Unit: m/s, km/h, mph, knots, bft Weather Forecast: Sunny, Overcast, Cloudy, Rainy, Snowy Time Format: 12H/ 24H Transmission Range: 433MHz, about 100m/ 328ft (Open Distance) Power Supply: Receiver: 2 x 1.5V AAA Alkaline Battery(Batteries not included) Transmitter: 2 x 1.5V AA Alkaline Battery or AA Lithium Battery(Batteries not included)