Features Product Function: This wind cup is mainly connected to a weather meter for measuring wind speed, suitable for WH2081 and other models of weather meters, convenient and practical. RJ11 Port Connection: It can be directly connected to the display via a transmission line (RJ11 connector required) or connected to wireless sensor transmission on the weather meter. 3 Cups Design: This anemometer tool features 3 cup design with low rotational resistance, ensuring accurate and stable measurement, greatly improving measurement efficiency. Replacement Part: These 3 cups wind speed sensor can directly replace old or damaged weather meter parts, which is compact and lightweight, easy to install and replace. Durable Material: The shell of the wind speed cup is made of excellent ABS material, which has good toughness, wear resistance, impact resistance, and long service life. Spec: Item Type: Weather Meter Wind Cup Material: ABS Connector: RJ11 packing list: 1 x Weather Meter Wind Cup Package List 1 x Weather Meter Wind Cup