Based on the search results, the product you inquired about, FC-TSDI-1. appears to be a partial model number. The complete and standard model number is FC-TSDI-16UNI. It is a digital input module belonging to the Honeywell Safety Manager system family.

Here are the key specifications and information for the Honeywell FC-TSDI-16UNI​ module:

💡 Module Overview and Applications

The FC-TSDI-16UNI​ is a critical component designed for high-reliability safety and control systems. It is used to acquire discrete (on/off) signals from field devices such as limit switches, valve position indicators, and push buttons. These signals are essential for the Safety Manager system to monitor the status of equipment and execute safety functions.

This module is typically deployed in critical industrial sectors where safety and operational integrity are paramount. Its applications include:

Oil & Gas Facilities:​ Monitoring emergency shutdown (ESD) valves, pump statuses, and gas detection alarms.

Chemical Plants:​ Handling signals for reactor safety interlocks, level switch monitoring, and equipment status verification.

Power Generation Stations:​ Used in turbine protection systems and for monitoring circuit breaker status.

⚙️ Key Features and Integration

The module’s design emphasizes safety and reliability. Key features include compliance with international safety standards and a compact, robust form factor suitable for harsh industrial environments.

For a complete system solution, this input module is designed to work seamlessly with other components in the Honeywell Safety Manager and Experion PKS families, such as redundant I/O chassis (e.g., FC-IOCHAS-0002R) and various output modules (e.g., FC-TSDO-04UNI).

⚠️ Important Note on Model Number

Please note that Honeywell has a related module with a similar number, FC-TSDI-16115. which is a 16-channel digital input module designed for 115V AC/DC signals. It is crucial to confirm the exact required specifications (especially input voltage) for your application to ensure you select the correct variant.