Siemens OH921
$87.74
Addressable Multi-Criteria Fire Detector
Lead Time: 6-8 Business Days
Factory New
Description
The Photoelectric | Thermal (Heat) Detector (Model OH921) is an intelligent, addressable multi-criteria detector that incorporates optical and thermal sensors, and uses signals in a neural network to create an intelligent multi-criteria detector. The encompassing result is a detector that provides enhanced detection to a wide range of products of combustion.
Model OH921 is UL 268 7th Ed. listed and incorporates advanced built-in isolation (optionally configurable), which greatly improves reliability, circuit integrity and provides advanced addressable fault finding.
Information
| Weight | .317 lbs |
|---|---|
| Dimensions | 2.00 × 4.50 × 4.50 in |
| Programming | |
| Detection Method | Fixed Temperature, Photoelectric, Programmable, Rate-of-Rise |
| Thermal Rating | |
| Condition |
Features
- UL 268 7th Edition Listed
- Built-in isolation (optional configurable)
- Each detector is self-testing:
- complete diagnostics performed every 10 seconds
- self-monitored for sensitivity within UL Listed limits
- Listed, approved as a heat detector:
- Rate-of-Rise Detection: 15°F / min. (8.3°C / min.)
- Fixed: 135°F (57°C)
- Superior electromagnetic interference (EMI) and radio-frequency interference (RFI) immunity
- Field programmable as rate-of-rise or fixed temperature, per ‘Alarm Source 2’ | Standard parameter
- Tri-color detector-status light-emitting diode (LED) with 360° view
- Compatible with Model 8720 | DPU (device programmer / loop tester)
- Polarity insensitive via SureWire technology (in non-isolator mode)
- Functions with Model DB-11–series mounting bases
- Restriction of Hazardous Substances (RoHS compliant)
- Automatic environment compensation
- UL Listed | FM, CSFM Approved
- UL 268: `Open Area Smoke Detection’
- UL 268A (Duct) – `Direct-in-Duct’ use
- UL 521: `Open Area Heat Detection’
- ULC-S531: `Open Area Smoke Detection’
- ULC-S539: `Open Area Heat Detection’
- FM 3230: `Open Area Smoke Detection’
- FM 3210: `Open Area Heat Detection’
- CSFM | File: 7272-0067:0258
Resources
Multi-Criteria Fire Detector; Model OH921
Siemens. Data Sheet. 2020.
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