enocean alarm with pir and door sensor

[bend94]

Hi,

I have a door opened sensor and a pir enOcean.
I am trying to do a little house alarm.
i am wondering how to check that door opened sensor and pir are online ?
imagine that a thief is approching my house with a radio jammer , how to detect that pir and door opened sensor are not reachable anymore ?

is there like a  "ping" command available in enOcean protocol ?

thanks in advance for your help

regards