Description
Product Overview
The Johnson Controls temperature controller is a high-performance single-stage control device designed for precise temperature management in industrial and scientific settings. With a robust construction measuring 11.1 x 4.1 x 4.3 inches and weighing 1.15 pounds, it ensures durability and reliability. The controller operates within a broad temperature range of -40 to 212°F (-40 to 100°C), making it versatile for various applications. Its single-pole, double-throw configuration provides efficient switching capabilities, while the model number A421ABC-02C identifies this specific unit for easy reference and compatibility checks.

Usage
This temperature controller is ideal for environments requiring stable thermal regulation, such as HVAC systems in commercial buildings, industrial process control in manufacturing plants, and laboratory equipment in research facilities. It suits applications where maintaining specific temperature thresholds is critical, including refrigeration units, heating systems, and environmental chambers. The target audience includes facility managers, industrial engineers, and technicians who need dependable temperature monitoring and control to ensure operational efficiency and product quality.
Why Choose Us
Johnson Controls brings decades of expertise in control systems, ensuring this temperature controller meets high standards of accuracy and durability. The product’s competitive advantages include its wide temperature range, which accommodates extreme conditions, and the single-pole, double-throw design for reliable performance. Quality assurance is backed by the manufacturer’s reputation and positive customer reviews, with a 4.6 out of 5 stars rating from 231 users, highlighting its consistency and ease of integration into existing systems.
Key Features
- Single-stage control for straightforward temperature regulation
- Wide operating range from -40 to 212°F for versatile applications
- Single-pole, double-throw design ensures reliable switching
- Compact dimensions of 11.1 x 4.1 x 4.3 inches for easy installation
- Durable construction weighing 1.15 pounds for long-term use
FAQ
What is the temperature range of this controller?
The controller operates from -40 to 212°F, equivalent to -40 to 100°C, covering a broad spectrum for various industrial needs.
Can it be used in outdoor environments?
Yes, its wide temperature range and sturdy build make it suitable for outdoor applications, but ensure proper enclosure to protect from moisture and debris.
How does the single-pole, double-throw feature work?
This design allows the controller to switch between two circuits, providing reliable control for heating or cooling systems based on temperature thresholds.
Is professional installation required?
While it can be installed by experienced technicians, consulting the manufacturer’s guidelines or a professional is recommended for optimal performance and safety.
What industries commonly use this controller?
It is widely used in HVAC, manufacturing, food processing, and scientific research for precise temperature management.





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