
FSI-851 Series intelligent plug-in ion detectors with integral communication has features that surpass conventional detectors. Detector sensitivity can be programmed in the control panel software. Sensitivity is continuously monitored and reported to the panel. Point ID capability allows each detector’s address to be set with decade address switches, providing exact detector locations for selective maintenance when chamber contamination reaches an unacceptable level.
The FSI-851 Series ionization detector incorporates a unique single-source, dual-chamber design to respond quickly and dependably to a broad range of fires. FSI-851 Series detectors are compatible with ONYX series and CLIP series intelligent Fire Alarm Control Panels (FACPs).

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| Model No. | Description |
| FSI-851 | Low-profile intelligent ionization sensor. Must be mounted to one of the bases listed below. |
| FSI-851A | Same as above but with ULC Listing. |


This information is not intended to be used for installation purposes. We try to keep our product information up-to-date and accurate. We cannot cover all specific applications or anticipate all requirements. All specifications are subject to change without notice.
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