Use 433Mhz receiver fo get temperatur from hama weather station

I using a weather station Hama Weather Station and now I try to get the outdoor temperatur from the outdoor sensor. The sensor send the data via 433 Mhz. I bought an 433 Mhz receiver (433Mhz RF Transmitter and Receiver ). I also read some tutorial to get the data from the sensor (Example). But I have no success.
Any one try something similar?

best regards