Product Description

Johnson Systems PWS-20P-PORT-B Presidor Wall Station with 20 Presets

Overview

Johnson Systems specifically developed a version of Presidor™ Wall Stations that could easily retrofit into older "Heritage Buildings" with wide range of analog wiring without the need to run modern CAT5 or similar wiring to achieve a digital control station upgrade. Our unique inter-station communication — we refer to as Unipolor Bi-Direction Protocol (UBD) — allows quick retrofit wherever 3 conductors (daisy-chain) or 4 conductors (star) exist. This protocol operates on a single wire of virtually any type and allows for digital communication between the room "Main" PWS station and connected "Secondary" stations up to 12 stations per room. It is necessary to operate this model of station at a higher voltage between 24VDC & 48VDC.
A Main/Master station will output up to 512 channels of DMX. Presets are limited to 20 compared with the standard 70 preset capability of the PWS-70P-DMX (previous page) in order to maintain function and noise immunity at the lower baud rate of this unique protocol. Minimum 4 wires required. Maximum distance between stations dependent on wiring type and gauge. Recommend power supply is model #PS-DIN-24, available in the PWS-KITs or stand alone.