Name: Bestselling Oh921 Siemens Multi-sensor Smoke Detector (part# S54320-f6-a2) No Hidden Fees [ZYodrOjF]
Brand: technovaprecision.com
SKU: HBS15518825361
Price: 18.99 USD
Availability: InStock
Rating: 3.84 (934 reviews)

Bestselling Oh921 Siemens Multi-sensor Smoke Detector (part# S54320-f6-a2) No Hidden Fees [ZYodrOjF]

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.

Additional information

Weight	0.32 lbs
Dimensions	2.00 × 4.50 × 4.50 in
Manufacturer	Siemens Industry, Inc.
Brand	Siemens
Condition	New
Unit of Measurement	EA (Each)
Programming	Electronic
Detection Method	Fixed Temperature, Photoelectric, Programmable, Rate-of-Rise
Thermal Rating	135°F
Production Status	Active

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