'Trigger update for all switches on the parent device.'

def update(self):

    self._parent_device.update()
    self._is_on = (self._parent_device.statuslocal[(self.outletnumber - 1)][2] == 'ON')
    self._outletname = '{}_{}'.format(self.controllername, self._parent_device.statuslocal[(self.outletnumber - 1)][1])
