
VISTA-128B Installation Instructions
7-6
When you get the proper displays on the keypad(s), the polling loop zones in the system are
functioning properly.
7. Power down and continue to the next section.
U
L
•
The 4208 must be mounted either inside the VISTA-128B cabinet or in a separate enclosure
which has a tamper-supervised cover.
•
The 4190WH right loop must not be used, and the left loop must be EOLR-supervised.
•
The 4278 Auxiliary Sensor Loop cannot be used.
•
The 4194 is not UL Listed.
•
The 4297 must be powered from the VISTA-128B Auxiliary Power Output or from a UL
Listed supplementary power supply.
Compatible Polling Loop Devices
4208 8-Zone Expander
• Accommodates up to 8 zones via the polling
loop.
• DIP switch-programmable.
• The first two zones can be either normal or
fast response (DIP switch selectable).
• All zones are EOLR-supervised (first six
zones = 4.7k ohms; last two zones = 30k
ohms), provided with the 4208.
4190WH 2-Zone Expander
• Accommodates up to 2 zones via the polling
loop.
• DIP switch-programmable.
• The left zone can be EOLR-supervised
(required in UL installations), can accept
either open or closed circuit sensors, and
can be set for fast response.
• The right zone is unsupervised and can
accept closed circuit sensors only (cannot
be used in UL installations).
4278 Quad PIR
• Quad element PIR with built-in RPM
(connects directly to the polling loop).
• DIP switch-programmable.
• Includes mirrors for both wide-angle and
curtain/long-range applications.
Features a nonsupervised auxiliary sensor
loop that can accept closed circuit sensors
only (cannot be used in UL installations).
4275 Dual PIR
• Dual-element PIR with built-in RPM
(connects directly to the polling loop).
• DIP switch-programmable.
• Includes mirrors for both wide-angle and
curtain/long-range applications and can
use the 1875PA Pet Alley mirror.
• Built-in selectable pulse count capability.
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