Single Stage Digital Temperature Control (120/240v SPDT) Zoom

Single Stage Digital Temperature Control (120/240v SPDT)


Brand: Johnson Controls

Johnson Controls
Qty Price
/ each
$418.25 / box (5 units x $83.65)
In Stock! Ships in 24-48 Hours
(34 Available)



Product Type: Temperature Control
Enclosure Type: NEMA-4X
Options: Comes with Sensor
Lead Wire Length: 9-3/4 Inches
Application: Temperature Control
Min Temp (F): -30°F
Max Temp (F): 212°F

Description for Johnson Controls A419AEC-1C

The A419 series controls are single-stage, electronic temperature controls with a Single-Pole, Double-Throw (SPDT) output relay. They feature a lockable front-panel touchpad for setup and adjustment, and a Liquid Crystal Display (LCD) for viewing the temperature and status of other functions. A Light-Emitting Diode (LED) indicates the controls output relay On/Off status. The A419 controls are available in 24 VAC or 120/240 VAC powered models. The A419 controls have heating and cooling modes, adjustable setpoint and differential, an adjustable anti-short cycle delay, and a temperature offset function. The setpoint range is -30 to 212°F (-34 to 100°C). The controls feature remote sensing capability and interchangeable sensors. The A419 controls are available in either NEMA 1, high-impact plastic enclosure suitable for surface or DIN rail mounting or NEMA 4X watertight, corrosion-resistant surface-mount enclosures.


  • Easy to Read Front Panel LCD:Displays the sensed temperature and control function status clearly, custom icons on the display indicate the control and system status at a glance
  • Wide Temperature Differential Adjustment Range (1 to 30F or C): allows the user to set a precise (1F or 1C) Temp differential from 1 to 30 (F or C) providing a much tighter differential than electromechanical controls
  • Adjustable anti-short cycle delay (0 to 12 minutes in 1 minute increments): Ensures that the output relay remains off for a user set time delay, which helps avoid hard starts, nuisance overload outages, and unnecessary equipment wear
  • Switch Activated Temperature Offset Function: Allows the user to shift the cut in and cutout setpoints by and adjustable offset based on the status of a user installed, external switch, such as a time clock.
  • High impact, Thermoplastic NEMA 1 or NEMA 4X Watertight, Corrosion-resistant enclosures: Increase application options, allowing surface and snap fit DIN rail mount, or Watertight surface mount
  • Lockable Front Panel Touchpad: Allows easy set up and adjustment of the A419 control setpoint, differential, and other functions, a concealed jumper locks the touchpad, and deters unauthorized adjustment of the control settings
  • Low and Line Voltage Models: Provide options for most refrigeration and HVAC control voltage applications

  • Range: -30 to 212°F (-34 to 100°C)
  • Differential: 1 to 30F° (1 to 30C°)
  • Sensor Lead Length: NEMA 1 Models 6-1/2 ft (2 m), NEMA 4X Models 9 in (0.25 m)

Single Stage Digital Temperature Control (120/240v SPDT)


by PowerReviews
Johnson ControlsSingle Stage Digital Temperature Control (120/240v SPDT)

(based on 1 review)

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Reviewed by 1 customer

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Excellent temp control unit

By skibeast

from Fremont, CA

Verified Buyer

Comments about Single Stage Digital Temperature Control (120/240v SPDT):

I purchased the NEMA 4X unit because I want an outdoor unit to mount on the house I built for my African Sulcata tortoise. The house is insulated, uses a radiant heating panel in conjunction with this temperature control to provide safe year round heating and temperature monitoring from outside the box.

Must read a schematic to wire it. Easy to operate once wired and jumpered correctly (per instructions).

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2 Questions | 2 Answers
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  • Single Stage Digital Temperature Control (120/240v SPDT)


    do these controls come with the 6.5 foot sensor cable or does that have to ordered separately?
    Asked on 8/12/2013 by FarnhamElectric from McMinnville, OR

    1 answer



      The length of the sensor lead for this model is 9.75 inches. That is what comes standard with models that have a NEMA 4x enclosure.

      Answered on 8/13/2013 by PexSupply Staff from NY
  • Single Stage Digital Temperature Control (120/240v SPDT)


    Does this model come prewired? I do not have the skill to wire it myself. I am looking to connect the thermostat to a residential fridge to maintain a specific temperature.
    Asked on 2/18/2012 by Anonymous

    1 answer



      These units do not come pre-wired and are recommended to be installed by a licensed technician.

      Answered on 2/28/2012 by PexSupply Staff from NY
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