Edwards KIR-OSHD Intelligent Multisensor Smoke and Heat Detector

The Edwards KIR-OSHD Intelligent Multisensor Smoke and Heat Detector is an addressable detector designed for compatible FX Series fire alarm systems. It combines advanced multi-criteria optical smoke sensing with rate-of-rise and fixed-temperature heat detection.

The KIR-OSHD uses dual optical wavelengths, multiple detection angles, and digital filtering to distinguish actual smoke from nuisance particles such as general cooking particulates. It also uses rotary addressing for straightforward device configuration.

Product Functions

• Provides intelligent smoke and heat detection
• Multi-criteria optical smoke sensing
• Rate-of-rise heat detection
• 135°F fixed-temperature heat detection
• Dual optical wavelength technology
• Multiple detection angles
• Helps reduce cooking nuisance alarms
• Provides five smoke sensitivity settings
• Provides twenty pre-alarm settings
• Automatic environmental compensation
• Provides dirty-detector warnings
• Supports automatic day/night sensitivity
• Uses rotary addressing
• Provides green/red status LED
• Supports standard, relay, isolator, and audible bases

Multi-Criteria Smoke Detection

The KIR-OSHD gathers information from multiple optical sensors and converts the readings into digital signals.

Dual optical wavelengths and multiple sensing angles allow the detector to analyze particle characteristics. Digital filtering helps reject signal patterns associated with nuisance sources while maintaining reliable response to actual smoke.

Smoke & Heat Detection

The KIR-OSHD combines optical smoke detection with electronic thermal sensing.

Fixed Temperature: 135°F / 57.2°C

Rate-of-Rise: 15°F / 9°C per minute

The detector can use smoke or heat to initiate an alarm and can also operate as a split sensor where smoke and heat generate separate signals.

Smoke Sensitivity

The published smoke obscuration range is:

0.5–4.36%/ft

1.6–13.6%/m

The detector also provides:

Five sensitivity settings

Twenty pre-alarm settings

Rotary Addressing

The KIR-OSHD uses rotary device addressing, providing a straightforward method of assigning detector addresses on compatible systems.

The detector is designed for FX Series systems and requires a compatible KI Series detector base.

Status LED

The KIR-OSHD incorporates a bi-color status LED:

Green: Normal operation

Red: Alarm condition

The LED provides local visual indication of detector status.

Compatible Detector Bases

Compatible bases include:

KI-SB / KI-SB4 — Standard bases

KI-RB / KI-RB4 — Relay bases

KI-IB / KI-IB4 — Fault isolator bases

KI-ABLT — Low-frequency audible base

KI-ABDT — Audible base for CO/fire applications

KI-ABST — Audible base for fire detectors.

Electrical & Detection Information

Model: KIR-OSHD

Device Type: Intelligent Multisensor Smoke and Heat Detector

Smoke Detection: Multi-Criteria Optical

Heat Detection: Fixed Temperature / Rate-of-Rise

Fixed Temperature: 135°F / 57.2°C

Rate-of-Rise: 15°F / 9°C per minute

Smoke Sensitivity: 0.5–4.36%/ft

Addressing: Rotary

Status Indicator: Green / Red LED

Operating Environment: 32°F to 100°F / 0°C to 38°C

Humidity: 0–93% RH, non-condensing.

KIR-OSHD Datasheet