[WIRELESS] The outdoor temperature sensor with built-in wireless technology can transmit up to 60 meters in an open area. The long wireless transmission range allows for flexible installation and reliable operation. [WATERPROOF] The outdoor temperature sensor features a waterproof design, making it suitable for various outdoor environments. [COMPACT] The sensor is compact and lightweight, requiring minimal installation space. [TWO WAYS TO INSTALL] Equipped with a mounting bracket and hanging hole on the back, the sensor can be easily mounted on a wall or placed on a flat surface. Powered by batteries, it offers cable-free convenience for easy installation. [APPLICABLE SCENE] Operating at a frequency of 433.92 MHz, this outdoor temperature sensor is designed for use with Fanju weather stations. Each weather station can connect to up to three outdoor temperature sensors.