Apply to be a TradeMaster!
System 450 Expansion Module w/ 2 SPDT Output Relay
Hover image to zoom

System 450 Expansion Module w/ 2 SPDT Output Relay

System 450 Expansion Module w/ 2 SPDT Output Relay
Hover image to zoom
$130.74 each
In Stock
In Stock
Get 7 Wed, Apr 5
More Available
Free Shipping This item ships free
Easy Returns No restocking fee for 90 days


System 450™ is a family of modular, digital electronic controls that is easily assembled and set up to provide reliable temperature, pressure, and humidity control for a wide variety of Heating, Ventilating, Air Conditioning and Refrigeration (HVACR) and commercial/industrial process applications. System 450 expansion modules allow you to increase the number of outputs in your control system to meet your application requirements.

  • Durable, Compact, Interchangeable Modular Components with Plug-Together Connectors and DIN Rail or Direct Wall Mount Capability
  • Eliminate field wiring between modules and allow you to quickly and easily design, assemble, install, and upgrade your control systems.
  • Versatile, Multipurpose, Field-Configurable Control Modules and Expansion Modules Designed for Global Use
  • Allow you to create a wide variety of application-specific control systems capable of controlling temperature, pressure, or humidity, or all three conditions simultaneously, with only a small suite of module models.
  • Control Modules with Bright Backlit LCDs and Four-Button Touchpad User Interfaces, Up to Three Hard-Wired Input Sensors and Up to Ten
  • Relay or Analog Outputs (In Any Combination) per Control System
  • Provide quick, clear, visual status of your System 450 control system inputs and outputs with the touch of a button and enable you to quickly and easily set up and adjust your control system.

  • Power Consumption: 1.2 VA Maximum
  • Ambient Operating Conditions: Temperature: -40 to 66°C (-40 to 150°F); Humidity: Up to 95% RH noncondensing; maximum dew point 29°C (85°F)
  • Control Construction: Independently mounted control, surface mounted with Lexan® 950 enclosure suitable for DIN rail mounting or direct mounting to a hard, even surface.




Product Type:

Control Module


Help Face
Question? Call or text 888-757-4774
Help Face


Speak with a real person who will go out of the way to help!
Call or text 888-757-4774

Free Shipping
On orders over $99
We offer flexible shipping and scheduling options, up-to-date delivery estimates, and free ground shipping on any order over $99 to make sure your order gets to you on-time, for less.
Shipping Policy
Easy Returns
Returning items is as simple as 1-2-3
Ordered the wrong product? Item damaged in transit? Our 3-step process makes returning products easy – even up to a year after purchase – with no restocking fees on returns made within 90 days.
Return Policy