[WIRELESS] The outdoor temperature sensor with built-in wireless sensor can work 60 meters in an open area. Long wireless transmission distance brings you easy installation and operation. [WATERPROOF] Outdoor temperature sensor with good waterproof function is perfect for outdoor working environment. [COMPACT] The outdoor temperature sensor is compact and lightweight, which won't occupy much installation space. [TWO WAYS TO INSTALL] The outdoor temperature sensor with bracket and hanging hole designed on the back can be easily installed on the wall or placed on the table. The outdoor temperature sensor is powered by batteries, nopower cable limitation, convenient to install. [APPLICABLE SCENE] The outdoor temperature sensor with a frequency of 433.92 MHz is designed for the Fanju weather station. A weather station can be connected with up to three outdoor temperature sensors.