Features: *This sensor is only used in the FanJu weather station. Please purchase it with caution! *FanJu weather station itself has a wireless sensor and does not need to be purchased separately. *FanJu 3378 weather station supports up to 3 wireless sensors. — Wall Mount or Table Stand — 1 Wireless Thermo Sensor Included — 433.92MHz RF transmitting frequency — 60 meter transmission range in an open area Specifications: Color: white Material: plastic Size: 96mm/3.78"×50mm/1.97"×34mm/1.34" Battery: 2×AA (not included) Package Includes: 1 × Temperature Humidity Wireless Sensor Note: Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! This sensor is only used in the FanJu weather station. Please purchase it with caution! FanJu weather station itself has a wireless sensor and does not need to be purchased separately. FanJu 3378 weather station supports up to 3 wireless sensors.— Wall Mount or Table Stand— 1 Wireless Thermo Sensor Included— 433.92MHz RF transmitting frequency— 60 meter transmission range in an open area Size: 96mm/3.78"×50mm/1.97"×34mm/1.34" Package Includes:1 × Temperature Humidity Wireless Sensor