A421AEC-02C    | Single Stage Temp Controller with Sensor, 120/240VAC, NEMA4X, 6' 7
Get Special Pricing!
Log In or Create an Account for the LOWEST PRICING on our most Popular Brands!
Brand: Johnson ControlsSKU: A421AEC-02C

Web Price:

Availability: IN STOCK
Contact us for price breaks on large quantities!
Orders over $999 ship FREE*
The product is not cancelable or returnable unless found defective
*Free shipping applies within the continental US and weighing less than 50 lbs.
Shipping and Returns Terms
Image for Technical Expert

Speak With a Technical Expert

Call (847) 773-0645

Hours: 9am - 5pm CDT M-F

A421AEC-02C | Single Stage Temp Controller with Sensor, 120/240VAC, NEMA4X, 6' 7" lead, -40 to 212F, HTG/CLG | Johnson Controls

Johnson Controls | A421AEC-02C
The photo is for representation purposes only and may not be a photo of product being purchased.
Search products similar to A421AEC-02C

Documents and manuals

Johnson Controls A421AEC-02C Documents


Details for A421AEC-02C

Single Stage Temp Controller with Sensor, 120/240VAC, NEMA4X, 6' 7" lead, -40 to 212F, HTG/CLG

Features and benefits

Control front panel LCD

Displays the temperature, parameters, and status. You can adjust the backlight intensity for ambient light conditions. Custom icons display the system and control status.

Basic and Advanced programming menu

Provides two levels of parameter adjustment and control. You can set up advanced features in one menu and easily adjust basic parameters in the other menu.

On/Off temperature adjustment

Select the temperature values at which the relay turns On and Off, which automatically defines the Heating or Cooling mode of operation.

Switch-activated temperature setback

Shift the On or Off temperature by an adjustable setback value. When a user-supplied switch closes the binary input control circuit, the control operates at the defined setback temperatures.

Adjustable anti-short cycle delay

Select the minimum time the output relay remains off before the next on cycle; avoiding short cycling, hard starts, and nuisance overload outages on compressors and other inductive applications.

Adjustable sensor offset

Adjust the displayed temperature to the actual sensed temperature.

Optional restricted adjustment mode

Restrict the On or Off adjustment to your defined temperature range.

Sensor failure mode

Select the relay On or Off state in the event of a sensor or sensor wire failure.

Backlight brightness level

Adjust the LCD backlight intensity.


Item Number A421AEC-02C
Brand Johnson Controls
Housing NEMA4X
Type Temperature Controller
Voltage 120/240VAC

Contractor Rewards Program

Learn more about POINTS PLUS Contractor Rewards Program

Already part of the POINTS PLUS Program?
Enter your Contractor ID # in the comment field of your order on Blackhawk Supply


People Also Searched
Johnson Controls A421AEC-02C
A421AEC 02C
Johnson Controls A421AEC 02C
Johnson Controls A421AEC02C
A421AEC-02C price
Johnson Controls A421AEC-02C price
A421AEC 02C price
A421AEC02C price
Johnson Controls A421AEC 02C price
Johnson Controls A421AEC02C price