Denso BHT-300B User Manual page 80

On the PROTOCOL TYPE screen, select the "3: BHT-Ir Protocol" to
call up the screen shown at left.
Enter the ID number of the BHT by using the numerical keys, and
then press the ENT key. If you do not need to modify the current
setting, press the ENT key only.
An ID number should be a five-digit decimal character string.
The entry range is from 00001 to 65534. If the entry value is less
than five digits, the ENT key will be deactivated.
If you make a wrong entry, press the BS key to delete it and then
enter the correct data.
To return to the SET COMMUNICATION menu, press the C key.
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