Reading Visonic Sensors with Arduino

Hi!
Trying to use few Visonic 433Mhz sensors with other hubs rather than Visonic's.
So built a simple 433Mhz circuit with this receiver
and with the RCSwitch example code could easily read 433 simple, unencrypted, 433 remote controllers.

However, when i trigger the Visonic clip sensor, nothing appears.

What am I missing ?

Has anyone done it before ? didn't find any examples. is is even possible ?

thanks!