This node allow to send infrared signal from the lircd.conf file. Just send the name of the remote saved in lircd.conf and they key.
For example:
TV/KEY_POWER
It is realy easy to use (no setting)
First instal node-red-contrib-lirc:
npm install node-red-contrib-lirc
Then install node-red-contrib-lirc2:
npm install node-red-contrib-lirc2
more information here