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Model PWS-20P-RETRO
Model PWS-20P-RETRO is designed specifically for use in Heritage Buildings using existing wiring (typically
analog) not capable of RS485. Communication is performed via a proprietary Unipolar Bi-Directional (UBD) low
baud rate protocol. This permits digital control upgrades to facilities that would otherwise be faced with a very
expensive wiring replacement cost!
Multiple stations must be series or daisy-chained. Minimum of 3 wires is required. No wiring "tee's" or "starring"
is permitted. This will result in hardware damage to one or more stations and void all warranty claims! Where a
"tee" or "star" must be used, 6 wires to each location shall be required permitting a continuous data and power
daisy-chain between all room stations. No "Tees" or "Star Wiring" permitted! Maximum distance dependent
on wire type and gauge. Typical 1000' or 300m on #18 AWG wiring.
Model PWS-20P-RETRO Configuration and DIP Switch Settings
Important!
One station in each wiring LAN must be designated as a Main PWS (switch 4 ON). Only one Main Station
per LAN. All Secondary PWS connected to the Main PWS (maximum 14 PWS) must have switch 4 turned OFF.
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