
Notifier 851 Series intelligent plug-in smoke detectors with integral communication provide 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 location for selective maintenance when chamber contamination reaches an unacceptable level. The FSP-851 photoelectric detector’s unique optical sensing chamber is engineered to sense smoke produced by a wide range of combustion sources. Dual electronic thermistors add 135°F (57°C) fixed-temperature thermal sensing on the FSP-851T. The FSP-851R is a remote test capable detector for use with DNR(W) duct detector housings. FSP-851 series detectors are compatible with all ONYX series Notifier intelligent Fire Alarm Control Panels (FACP).

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| Models No. | Description |
| FSP-851 | Low-profile intelligent photoelectric sensor. Must be mounted to one of the bases listed below. |
| FSP-851A | Same as FSP-851 but with ULC listing. |
| FSP-851T | Same as FSP-851 but includes a built-in 135°F (57°C) fixed-temperature thermal device. |
| FSP-851TA | Same as FSP-851T but with ULC listing. |
| FSP-851R | Low-profile intelligent photoelectric sensor, remote test capable. For use with DNRW. |
| FSP-851RA | Same as FSP-851R 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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