Magnetic Door Sensor and SR-RCS-202U Wireless Receiver

One of our customers asked – I am interested in your device – SR-RCS-202U. I would like to know if you have a matching magnetic door sensor that can transmit to work with this receiver unit?

And here is our reply from sales department.

Yes we can do some software changes to make our SR-RCS-202U compatible with magnetic door sensor.

May I ask if this set will be as part for your product? or something else?