The VENTUS W047 is a wireless temperature sensor specifically designed for use with the W820 system. This device combines the functions of a thermometer and hygrometer to enable precise measurements of temperature and humidity. The sensor is ideal for use in various environments, whether indoors or outdoors, and provides a user-friendly solution for monitoring climatic conditions. The wireless technology allows for easy installation and flexible placement without the need for complicated wiring. Therefore, the VENTUS W047 is a practical addition for anyone who values a comfortable indoor climate or wants to monitor specific environmental conditions. With its reliable performance and accurate readings, this sensor is a valuable tool for various applications, from climate control to monitoring storage conditions.