Still nothing, even after adding your rules file.
looking at device '/devices/pnp0/00:0c/tty/ttyS1': KERNEL=="ttyS1" SUBSYSTEM=="tty" DRIVER==""
looking at parent device '/devices/pnp0/00:0c': KERNELS=="00:0c" SUBSYSTEMS=="pnp" DRIVERS=="serial" ATTRS{id}=="WACf004"
looking at parent device '/devices/pnp0': KERNELS=="pnp0" SUBSYSTEMS=="" DRIVERS==""
Still nothing, even after adding your rules file.
looking at device '/devices/ pnp0/00: 0c/tty/ ttyS1': ="tty"
KERNEL=="ttyS1"
SUBSYSTEM=
DRIVER==""
looking at parent device '/devices/ pnp0/00: 0c': ="00:0c" ="pnp" ="serial" id}=="WACf004"
KERNELS=
SUBSYSTEMS=
DRIVERS=
ATTRS{
looking at parent device '/devices/pnp0':
KERNELS=="pnp0"
SUBSYSTEMS==""
DRIVERS==""