Description
The Johnson Controls A421ABC-02 is a versatile, single-stage electronic temperature controller engineered for reliable performance across a wide range of commercial and industrial HVAC and refrigeration applications. With a broad operating range and a user-friendly front-panel LCD, this controller delivers precise temperature management in a compact, field-ready package.
Key Features
- Wide temperature control range of -40°F to 212°F (-40°C to 100°C) for heating and cooling applications
- Dual-voltage compatibility — operates on 120 or 240 VAC for flexible installation
- Front-panel LCD display for easy setpoint viewing and adjustment
- NEMA 1 enclosure rating for indoor use in clean environments
- Supports DIN rail or surface mounting for versatile panel and wall installations
- Includes a temperature sensor with a 6½-foot cable and 2-inch probe for immediate deployment
Product Specifications
- SKU: A421ABC-02
- Brand: Johnson Controls
- Voltage: 120/240 VAC
- Temperature Control Range: -40°F to 212°F
- Display: Front Panel LCD
- Enclosure: NEMA 1
- Mounting: DIN Rail or Surface Mount
- Sensor Cable Length: 6½ feet
- Probe Length: 2 inches
Applications
- Refrigeration unit temperature control
- Heating and cooling equipment staging
- Walk-in cooler and freezer management
- HVAC unit control panels
- Industrial process temperature monitoring
Why Choose the Johnson Controls A421ABC-02?
The A421ABC-02 combines a rugged NEMA 1 enclosure with dual-voltage flexibility and an intuitive LCD interface, making it a go-to solution for contractors and facilities managers who need dependable temperature control right out of the box. The included sensor and probe eliminate the need for additional accessories, saving time on installation and reducing overall project costs.
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