Wireless Frequency: 433 Hz Temperature Measurement Range: -20°C to 70°C Humidity Measurement Range: 20°C to 95% Temperature Resolution: 0.1°C Humidity Resolution: 1% Temperature Accuracy: +/-1°C Humidity Accuracy: +/-5% Four Weather Displays on the Main Unit: Sunny, Cloudy, Partly Cloudy, and Rain Day Display on the Main Unit in Seven Languages: English, Italian, French, Dutch, Spanish, Danish, and German The main unit can simultaneously receive up to three slave units with different frequencies. The current connection is for the separately purchased slave unit (sensor). Color: Silver Material: ABS Package Contents: 1 * Wireless Thermometer Sensor (2 x AAA batteries are not included in the shipment) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.