Is It Possible To Toggle Lights On And Off (delay How Long "on")
I knew it, water element ;)
light with targetname "l1"
trigger_button or trigger_multiple, turns two relays with the same targetname "tr1". one relay with delay 0 (or 1, or 2, etc). the other relay with delay 20. then trigger_button/trigger_multiple will need a wait of 20 at least.
that might work