Description
The Johnson Controls A421GEF-02 is a versatile electronic temperature controller engineered for demanding commercial and industrial HVAC applications. Featuring a wide operating range and a rugged NEMA 4X watertight enclosure, this controller delivers reliable, precise temperature management in environments where moisture and contaminants are a concern.
Product Overview
The A421GEF-02 operates on 24 VAC power and provides a broad temperature control range of -40°F to 212°F (-40°C to 100°C), making it suitable for refrigeration, heating, and process control applications. The front-panel LCD display allows for easy on-site configuration and monitoring, while the NEMA 4X surface-mount enclosure ensures protection against dust, water, and corrosion in harsh environments.
Key Features
- Electronic temperature controller with 24 VAC power supply
- Wide temperature control range: -40°F to 212°F (-40°C to 100°C)
- Front-panel LCD display for easy setup and real-time monitoring
- NEMA 4X rated enclosure — watertight and corrosion-resistant
- Surface-mount design for flexible installation
- Includes temperature sensor with 6.6-foot (2 m) cable for out-of-the-box deployment
- Suitable for heating and cooling control applications
Specifications
- SKU / Model: A421GEF-02
- Brand: Johnson Controls
- Supply Voltage: 24 VAC
- Temperature Control Range: -40°F to 212°F (-40°C to 100°C)
- Display: Front Panel LCD
- Enclosure Rating: NEMA 4X (Watertight)
- Mounting: Surface Mount
- Included Accessories: Temperature sensor with 6.6 ft (2 m) cable
Applications
- Commercial refrigeration and cooler control
- HVAC heating and cooling systems
- Industrial process temperature control
- Food service and cold storage environments
- Wet or washdown locations requiring NEMA 4X protection
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