Issue
Only the following central station receivers support the D6412/D4412 Modem IIIa2 Format: • D6600 with CPU v.01.01.03 (or higher) • D6500 with D6511 MPU v1.05 (or higher) .The D6500 with D6510 MPU does not support the D6412/D4412 Modem IIIa2 Format.
Note: Normal operation when using the A,B,C keys, reporting is as follows:
[A] key reports as Zone 100 for all areas
[B] key reports as Zone 101 for all areas
[C] key reports as Zone 102 for all areas