SIEMENS HTRI modules are available in three models.The HTRI-S and HTRI-R can monitor a normally open or closed dry contact. The HTRI-S can only monitor and report the status of the contact, while the HTRI-R incorporates an addressable Form C relay. The HTRI-D is a dual input module that supervises and monitors two sets of dry contacts
HTRI-S Interface Module
HTRI-S Single Input Monitor Module
| Brand |
SIEMENS |
|---|---|
| Warranty |
1x Month |
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