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Andover Controls

Andover Controls EMX155 Infinity Expansion Module External Power Port BAS

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SKU:
50102
MPN:
EMX155
Condition:
Used
Availability:
Usually ships within 1-2 business days.
Weight:
1.00 LBS
Shipping:
Calculated at Checkout
  • Andover Controls EMX155 Infinity Expansion Module – angled top view showing Output A and Output B relay terminals and green expansion bus connector
  • Andover Controls EMX155 Infinity Expansion Module – front panel view showing Override A/B switches, Output A/B relay terminals (NC/C/NO), External Power port, and Board DIP switches
  • Andover Controls EMX155 Infinity Expansion Module – three-quarter view showing front panel labels, relay output terminal blocks, and External Power port
  • Andover Controls EMX155 – close-up of internal expansion bus pin header connector on PCB
  • Andover Controls EMX155 – close-up of internal expansion bus connector with locking socket on PCB
$35.20
Was: $70.00
Current Stock: 6

Sold Out

Description

Andover Controls EMX155 Infinity Expansion Module External Power Port BAS

The EMX155 is an expansion module for Andover Controls Infinity building automation systems. It provides two relay outputs with dry contact switching and connects to compatible controllers via expansion bus interface.

Specifications & What's Included

  • 2 relay outputs (Output A, Output B) with NC/C/NO dry contact configuration
  • External power port input with + / - terminals
  • DIP switch selectable board addressing (positions 1 and 2)
  • 2 override switches (A and B) with AUTO / OFF / ON positions
  • Pin header expansion bus connector
  • DIN-rail / panel mount form factor
  • Module only; no additional components included

Applications

The EMX155 is used in distributed building automation and direct digital control (DDC) systems for HVAC and building management. It expands relay output capacity on Infinity controllers, enabling control of additional equipment, dampers, and devices. This module was standard in commercial BAS installations from the 1990s through 2000s for systems requiring hardwired relay switching and external power sourcing.

Condition: Used
This Andover Controls EMX155 Infinity Expansion Module has been inspected and is in good used condition. It was pulled from a working BAS installation where it was actively in use and functional. The enclosure shows light surface wear typical of installed equipment. The relay terminal blocks, override switches, DIP address switches, and expansion bus connector all appear intact and undamaged. Please view our photo set and contact us if you have any questions. Please note: We have multiple units in stock — yours may not be the one shown in the photos, however, it will be similar in condition and function.
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Warranty Information

We stand behind every item we sell with a 30-day money-back guarantee. If your item arrives not as described, you may return it within 30 days for a full refund. Please inspect your purchase upon arrival and contact us with any questions.
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Additional Information

Brand:
Andover Controls
Model:
EMX155
MPN:
EMX155
Type:
BAS Expansion Module
SKU:
50102
Product Line:
Infinity
Number of Relay Outputs:
2 (Output A, Output B)
Output Contact Type:
NC / C / NO (dry contact relay)
Power Input:
External Power Port (+ / -)
Board Address:
DIP switch selectable (positions 1 and 2)
Override Switches:
2 (A and B) — AUTO / OFF / ON
Bus Interface:
Pin header expansion bus connector
Form Factor:
DIN-rail / panel mount module
Compatible With:
Andover Controls Infinity BAS controllers
Application:
Building Automation System (BAS), DDC, HVAC
Condition:
Used – Pulled from Working Environment
Seller Notes:
Module only; pulled from working BAS installation.
Country/Region of Manufacture:
United States
Condition Notes:
Andover Controls EMX155 Infinity Expansion Module in good used condition. Pulled from a working BAS installation where it was in active use. Inspected; terminal blocks, switches, and connector appear intact.
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30046
SKU:
30046
Availability:
Usually ships within 1-2 business days.
Weight:
2.00 LBS
Brand:
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2040-002
MPN:
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Rev G
Type:
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Interface Type:
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Connector Type:
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Form Factor:
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Condition:
Used – Pulled from Working Environment
SKU:
30046
Seller Notes:
Module only; no additional accessories included
Country/Region of Manufacture:
United States
Condition Notes:
CMI 2040-002 RS232/485 Comm Snap Module Rev G. Inspected and in good used condition. Pulled from a working environment where it was in active use. Jacks and connectors intact. See photos.