Photoelectric Smoke Detection
The FSP-851 uses a photoelectric sensing chamber engineered to detect smoke produced by a wide range of combustion sources.
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Technical specifications, features, applications and purchasing information.
| Brand | Honeywell |
| Model Number | FSP-851 |
| Product Category | Photoelectric Smoke Detector |
| Product Series | 851 Series |
| Detection Type | Photoelectric |
| System Type | Addressable |
| Voltage Range | 15 to 32 VDC Peak |
| Standby Current | 300 µA Max. Avg. @ 24 VDC |
| LED Current | 6.5 mA Max. @ 24 VDC (ON) |
| Operating Temperature | 0°C to +49°C (32°F to 120°F) |
| Operating Humidity | 10% to 93% RH (non-condensing) |
| Addressing | Rotary Address Switches |
| Indicators | Dual LEDs for 360° Visibility |
| Communication | Analog Communications |
| Overall Height | 5.3 mm |
| Approvals | UL Listed, FM Approved, CSFM, MEA Listed |
The FSP-851 uses a photoelectric sensing chamber engineered to detect smoke produced by a wide range of combustion sources.
Each detector address can be set with rotary address switches, enabling exact detector location identification at the control panel.
Dual LEDs provide 360-degree visibility of the detector status from multiple viewing angles.
It supports analog communication with compatible control panels, allowing sensitivity to be programmed and monitored from the panel.
The maximum average standby current is 300 µA at 24 VDC, supporting efficient operation on addressable loops.
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What is the Honeywell FSP-851? The FSP-851 is an addressable photoelectric smoke detector from the Honeywell 851 Series, designed for commercial and industrial fire alarm systems.
What type of detection does the FSP-851 use? It uses photoelectric smoke detection.
What is the voltage range of the FSP-851? The voltage range is 15 to 32 VDC peak.
What is the standby current of the FSP-851? The maximum average standby current is 300 µA at 24 VDC.
What is the operating temperature range of the FSP-851? The operating temperature range is 0°C to +49°C (32°F to 120°F).
What is the operating humidity range of the FSP-851? The operating humidity range is 10% to 93% RH (non-condensing).
How is the FSP-851 addressed? It uses rotary address switches for point ID addressing.
What type of LEDs does the FSP-851 have? It has dual LEDs for 360° visibility.
Is the FSP-851 addressable? Yes, it is an addressable detector with analog communications.
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