Johnson Controls D350AA-1 Display Module

The Johnson Controls D350AA-1 Display Module is a critical interface component for System 350 electronic control systems, providing precise digital readouts for temperature-controlled environments. Designed for direct integration with A350 controllers and S350 stage modules, this unit displays sensed temperatures from -30 to 250 degrees Fahrenheit. The D350AA-1 utilizes a 3-digit liquid crystal display (LCD) to deliver real-time feedback, allowing technicians to verify system setpoints and sensor data with high accuracy. This module is essential for commercial HVACR applications requiring reliable digital temperature monitoring and field-level troubleshooting. High industrial build quality ensures stable performance in mechanical rooms, supporting efficient system diagnostics. Whether you are replacing a legacy unit or completing a custom modular electronic control build, the D350AA-1 serves as the primary visual reference point for optimizing thermal regulation and ensuring consistent equipment cycling within Johnson Controls System 350 architectures.

• Seamless compatibility with the entire range of System 350 modules for streamlined installations.
• Wide operating range of -30 to 250°F (-35 to 121°C) covers most medium and low-temp refrigeration applications.
• Eliminates guesswork by providing an immediate, high-contrast LCD temperature display of the sensed environment.
• Low-profile modular control interface design allows for side-by-side DIN rail or surface mounting.
• Field-proven reliability in demanding commercial HVAC environments for long-term service life.

Does this module require a separate power supply?
No, the D350AA-1 receives its logic power directly from the Y350R Power Module or the master controller via the integrated 5-pin connector bridge.

Can I use this display to adjust setpoints?
This is a dedicated digital display module. While it provides accurate readouts of the sensor data, any adjustments to setpoints or differentials must be made on the primary A350 Temperature Controller.

Can this display be remotely mounted from the controller?
The D350AA-1 is designed for adjacent mounting using the standard 5-pin plug-in connectors. For remote mounting, specific wiring extensions compatible with Johnson Controls HVAC parts must be utilized to maintain signal integrity.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.