1、Wireless temperature. Receive wireless outdoor temperature from included transmitting sensor 2、Temperature trend arrows indicate whether temperature is rising or falling. °C and °F change freely for easy reading. 3、Large display provides enhanced visibility and at-a-glance readings, convenient to use. 4、This wireless digital thermometer suitable for monitoring both indoor and outdoor temperatures in two metrics, °F or °C. 5、The wireless remote sensor transmits up to 100m. It can serve as your personal weatherman, providing reliable at-home temperature readings of outside weather. Features: 1. Wireless temperature. Receive wireless outdoor temperature from included transmitting sensor 2. Temperature trend arrows indicate whether temperature is rising or falling. °C and °F change freely for easy reading. 3. Large display provides enhanced visibility and at-a-glance readings, convenient to use. 4. This wireless digital thermometer suitable for monitoring both indoor and outdoor temperatures in two metrics, °F or °C. 5. The wireless remote sensor transmits up to 100m. It can serve as your personal weatherman, providing reliable at-home temperature readings of outside weather. Specification:   Item Type: Thermometer Material: ABS Language: English, German, French, Italian, Spanish, Dutch, Danish Temperature display resolution: 0.1 °C Humidity measurement Range: 20% - 95% Backlight: Blue LED Voltage: 2.5v- 3.3v Thermometer Battery: 2 x AA (Not Included) Sensor Battery: 2 x AAA (Not Included) Displayer Size: Approx. 17 x 12cm / 6.7 x 4.7in Sensor Size: Approx. 10 x 6cm / 3.9 x 2.4in Weight: Approx. 436g / 15.37oz Package List:  1 x Instruction  1 x Sensor  1 x Displayer