Products Description
P0903CW is produced by the Invensys Foxboro company (which is now owned by Schneider Electric). The device is an operator interface for the I/A Series DCS by Foxboro. The main function of the Annunciator/Numeric keyboard is to provide operator control and monitoring at industrial facilities, allowing operators to enter data and acknowledge alarms via the physical keyboard.
Technical Information
|
Brand |
FOXBORO |
|
Model |
P0903CW |
|
Description |
Annunciator Keyboard |
|
Origin |
USA |
|
Dimension |
30*20*6cm |
|
Weight |
2.8kg |
Functional Features
P0903CW Annunciator Keyboard
Alarm Display Function
Real-time display of system alarm status
Provide clear alarm indications (lighting/status alerts)
Support alarm confirmation and reset operations
Numeric Keyboard Function
Equipped with digital keys (0–9)
Support operations such as parameter input and value adjustment
Can be used for simple command input
Human-computer interaction interface
As an operator, connect the input device to the DCS system.
Provide an intuitive operation method
Simplify the on-site operation procedures
Status Feedback and Instructions
Display the system's operating status or operation feedback
Provide operation confirmation information
Application Advantages
✅ 1. Enhance the efficiency of alarm response
Through intuitive alarm indications, operators can promptly identify and handle abnormal situations, thereby reducing the scope of the impact of faults.
✅ 2. Simplify the operation process
Integrated display and input functions, without the need for additional operation devices, enhance operational convenience.
✅ 3. Enhance system security
Support alarm confirmation and manual intervention to prevent accidental operations or overlooking critical alarms.
✅ 4. Enhance the human-computer interaction experience
With clear buttons and indicator designs, the operation becomes more intuitive,e and the difficulty of use is reduced.
✅ 5. Applicable to a critical control environment
In continuous production scenarios such as power plants and chemical plants, provide operators with a reliable local operation interface.

Technical Q&A
Frequently Asked Questions
Q1: Can the P0903CW be used independently?
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A: No, it needs to be connected to the Foxboro DCS system to be used as an operation and display terminal.
Q2: Is this device primarily an input device or a display device?
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A: It serves both as an alarm display unit and a digital input keyboard.
Q3: Can it replace the operator station (HMI)?
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A: No, its functions are relatively basic. It is mainly used for simple input and alarm indication, and cannot replace a complete operation station.
Q4: Do you support the alarm confirmation function?
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A: Yes, the operators can confirm the alarm and perform basic operations by pressing the buttons.
Q5: In which locations is it suitable for installation?
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A: It is usually installed on the control cabinet panel, operation console, or local control panel.













