fs20 via https://github.com/Nidhoggrr/bulcs/tree/master/lights/modules/rfmsend
define rfmsendFnordlicht notify Fnordlicht "./rfmsend.sh 00 "$EVENT""
rfmsend.sh (visudo: fhem ALL=(ALL) NOPASSWD: /opt/fhem/rfmsend):
#!/bin/bash
if [ "$2" == "on" ] ; then
sudo ./rfmsend -a $1 -s 10
else if [ "$2" == "off" ] ; then
sudo ./rfmsend -a $1 -s 00
else sudo ./rfmsend -a $1 -s 12
fi
fi