This sensor has limited compatibility with the following weather stations. Please check and order the frequency to match the sensor or console that you are using. WN2800 WN2810 Not suitable for the HPxxxx or GWxxxx Ecowitt weather stations. Features Transmits outdoor temperature & humidity 3 channel selection switch LCD display Includes 1 x WN31A3D Sensor (868MHz or 433Mhz) Technical & Manual Temperature range: -40°C – 60°C (14°F - 140°F) LCD may become difficult to read below -10 °C Temperature resolution: 0.1°C or 0.1°F Temperature accuracy: ±1°C Humidity range: 10% - 99% Humidity resolution: 1% Humidity accuracy: ± 5% Transmission distance in open field: 100m (300 feet) Choice of 868MHz UK and European frequency, or 433MHz International Sensor reporting interval: 61 seconds Power: 2 x AA 1.5V LR6 Alkaline batteries (required) The electronic copy of the manual is available to download by clicking here. Warranty 1 year warranty from date of purchase - return to supplier. Batteries are excluded from warranties as they are classed as a consumable item. See our terms and conditions for full details of the warranty.