Siemens HTRI-R Interface Relay: Reliable Fire Alarm System Integration

The Siemens HTRI-R single-input interface module with relay allows fire alarm systems to monitor and control external devices with precision. From activation, this module helps expand system functionality by connecting initiating devices and controlling auxiliary equipment. Because modern fire alarm systems require flexible integration, this module supports reliable performance in commercial and institutional applications. It is commonly used where controlled outputs and supervised inputs are required.

Single Input Monitoring
The HTRI-R module supervises one input circuit to monitor external devices such as switches or contacts. Therefore, the fire alarm control panel can receive accurate status information. In addition, supervised input monitoring helps detect wiring issues quickly. Because of this feature, system reliability improves, and maintenance becomes more efficient.