Honeywell IAQPoint2 User Manual page 1450

Device Communication
Dip Switch Settings
These possible combinations of switch settings allow for up to 128
addresses, as in this example if:
Switch D3: ON = 4
Switch D4: ON = 8
Switch D6: ON = 64
Add the values of all the switches that are on to obtain the device's
address (4+8+64=76). If all the switches are in the ON position, the
maximum address value would be 127, however, the FLN protocol only
supports address values from 1 to 98. Address 99 is reserved for
backdoor access (remote calibration, etc.).
The detector's address is updated only at startup, which means that you
will have to cut power to the device and power up again.
18 901T User Manual