Description
Johnson Controls A421AEC-02 Electronic Temperature Control Overview
The Johnson Controls A421AEC-02 is a versatile, single-stage electronic temperature controller engineered for demanding HVAC and refrigeration applications. Designed to handle a wide operating range and built to withstand harsh environments, this controller delivers reliable, precise temperature management for commercial and industrial installations.
Key Features
- Wide temperature control range of -40°F to 212°F (-40°C to 100°C) for maximum application flexibility
- Dual-voltage compatibility: operates on 120 or 240 VAC for easy integration into a variety of electrical systems
- Front panel LCD display for clear, at-a-glance temperature readings and setpoint visibility
- NEMA 4X-rated enclosure provides protection against dust, dirt, splashing water, and corrosion — ideal for wet or washdown environments
- Flexible mounting options: DIN rail or surface mount for convenient installation in control panels or on walls
- Includes a temperature sensor for out-of-the-box installation readiness
- Single-stage output for straightforward heating or cooling control applications
Application Suitability
The A421AEC-02 is well-suited for a broad range of applications including refrigeration systems, walk-in coolers and freezers, HVAC equipment, food service environments, and industrial process control. Its NEMA 4X enclosure makes it especially appropriate for locations exposed to moisture, condensation, or cleaning agents.
Specifications
- SKU / Model: A421AEC-02
- Brand: Johnson Controls
- Control Type: Electronic, Single-Stage
- Voltage: 120/240 VAC
- Temperature Control Range: -40°F to 212°F (-40°C to 100°C)
- Display: Front Panel LCD
- Enclosure Rating: NEMA 4X
- Mounting: DIN Rail or Surface Mount
- Includes: Temperature Sensor
Why Choose the Johnson Controls A421AEC-02?
Johnson Controls is a globally recognized leader in building controls and HVAC solutions. The A421AEC-02 combines durability, ease of use, and installation flexibility in a single, compact package. The included temperature sensor eliminates the need for additional purchases, and the NEMA 4X enclosure ensures long-term reliability even in the most demanding environments.
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