docs: def turn_on(self):
          """Turn Air Purifier on"""
          if self.device_status != 'on':
              body = helpers.req_body(self.manager, 'devicestatus')
              body['uuid'] = self.uuid
              body['status'] = 'on'
              head = helpers.req_headers(self.manager)
  
              r, _ = helpers.call_api('/131airPurifier/v1/device/deviceStatus',
                                      'put', json=body, headers=head)
  
              if r is not None and helpers.check_response(r, 'airpur_status'):
                  self.device_status = 'on'
                  return True
              else:
                  return False