Honeywell EC-FX-NH3 Instruction And Installation Manual page 14

RS-485 output: Always use two conductor twisted pair, insulated, stranded,
shielded copper cable for the communication cable. Use two conductor,
insulated, stranded cable for sensor power.
With RS-485, the communication cabling of the network is "daisy chained", with
multiple devices (sensors, relay modules, etc.) communicating along the same
pair of wires. If used with the AirAlert
wired in series per channel (up to three channels).
Refer to the controller manual for specific wiring details.
When many sensors are connected to one set of power cables, total
current draw may exceed cable recommendations and/or cause
considerable line-loss. Contact Honeywell Analytics for
recommendations on power cable sizing and additional power
supplies.
TM
96d controller, up to 32 devices can be
OPERATOR MANUAL
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