Bresser Optik Thermo Hygro Quadro NLX Thermo-hygrometer Black | Conrad.com
Bresser 7 channel Temperature & Humidity Sensor 7009999 Weather Spares
Bresser Wireless Weather Station Thermo/Hygro Sensor 5 Channel 433 MHz Frequency for Temperature and Humidity Detection, White & TFA Dostmann Protective Cover for Transmitter Items, Easy to Assemble, White : Amazon.de: Garden