Siemens (Pyro) HTRI-D
Siemens (Pyro) HTRI-D
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The Siemens HTRI-D is an addressable dual-input intelligent interface module used to bring two separate dry-contact devices onto a Siemens FireFinder XLS or FS-250 fire alarm control panel's signaling line circuit. It provides two independent Class B input circuits that monitor normally-open contact devices - such as a waterflow switch and its associated tamper switch - while occupying only a single system address.
Key Features
- Two independent Class B monitoring circuits from a single addressable point
- Panel can identify which of the two inputs is in alarm
- Typical application: pairing a waterflow switch with its valve tamper switch
Technical Specifications
- Input Type: Normally-open dry contact, 2x Class B circuits
- Compatibility: Siemens FireFinder XLS, FS-250 fire alarm control panels
- Status: Discontinued by manufacturer; replaced by XTRI-D for Desigo/Cerberus Pro panels
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