Simplex 4098-9764 TrueAlarm Addressable Multisensor Detector Head

The Simplex 4098-9764 TrueAlarm Addressable Multisensor Detector Head provides advanced fire detection for compatible Simplex addressable fire alarm systems. It combines optical sensing, electronic thermal detection, and intelligent TrueSense analysis in one low-profile housing.

In addition, its IDNet communication allows compatible fire alarm control panels to monitor sensor conditions, adjust detection settings, and identify maintenance requirements.

TrueAlarm Multisensor Technology

This detector combines two sensing technologies to monitor developing fire conditions.

First, its optical sensing chamber measures airborne particles associated with combustion. Meanwhile, its electronic thermistor monitors surrounding temperature.

The detector communicates both types of sensing information to a compatible Simplex fire alarm control panel.

Therefore, the system can evaluate individual readings and combined fire conditions.

This technology provides flexible detection for approved commercial and institutional applications.

TrueSense Intelligent Fire Analysis

TrueSense technology compares optical and thermal activity at the same detector location.

The fire alarm control panel analyzes these readings to recognize patterns associated with developing fires.

As a result, the system can improve its response to certain rapidly developing fire conditions.

Moreover, TrueSense analysis works alongside automatic sensitivity compensation to help reduce unwanted alarms.

Four Detection Modes

The Simplex 4098-9764 supports four methods of detecting fire conditions.

Optical Detection: The sensing chamber monitors airborne combustion particles using light-scattering technology.

Fixed-Temperature Detection: The electronic thermal sensor monitors temperatures against a selectable alarm threshold.

Rate-of-Rise Detection: The thermistor identifies rapid increases in surrounding temperature.

TrueSense Combined Analysis: The control panel evaluates optical and thermal activity together.

These detection methods provide additional flexibility when configuring an approved fire alarm system.

Selectable Fixed-Temperature Detection

The integrated electronic heat sensor supports fixed-temperature alarm settings of 135°F (57.2°C) or 155°F (68°C).

The selected setting depends on the fire alarm control panel configuration and approved application.

Unlike non-restorable mechanical heat elements, the electronic thermistor is self-resetting.

Therefore, thermal activation does not automatically require detector replacement, provided the device remains serviceable and passes required testing.

Rate-of-Rise Heat Detection

The detector also supports selectable rate-of-rise sensing.

Compatible Simplex control panels can configure thresholds of 15°F or 20°F per minute.

This feature monitors rapid temperature changes that may indicate developing fire conditions.

In addition, installers can configure fixed-temperature and rate-of-rise operation together when permitted by the approved system design.

Intelligent IDNet Communication

The detector communicates through the Simplex IDNet signaling network.

Its optical and thermal information can be reported using one IDNet address per compatible base.

As a result, the fire alarm control panel can identify the detector location and evaluate individual sensing conditions.

The manufacturer identifies compatibility with selected 4007ES, 4010ES, 4100ES, and 4100U control panels.

However, installers must verify panel firmware, communication modules, and system programming before installation.

Automatic Sensitivity Compensation

TrueAlarm technology monitors changes in the optical sensing chamber over time.

Dust, dirt, and component aging can affect detector sensitivity. However, the system compensates for gradual changes within its designed operating limits.

Moreover, the control panel can identify dirty and excessively dirty conditions.

Consequently, maintenance personnel can determine when cleaning or service is required.

Key Features

• Intelligent addressable multisensor detector head
• Simplex TrueAlarm technology
• TrueSense combined optical and thermal analysis
• IDNet communication
• One IDNet address per compatible base
• Optical light-scattering sensing chamber
• Electronic thermistor heat detection
• Selectable 135°F or 155°F fixed-temperature alarm
• Selectable 15°F or 20°F-per-minute rate-of-rise alarm
• Adjustable optical sensitivity
• Automatic environmental compensation
• Contamination monitoring
• Magnetic functional testing
• Base-mounted LED status indication
• Frost-white housing
• Low-profile construction
• Compatible relay, sounder, and isolator bases
• Professional addressable fire alarm applications

Magnetic Functional Testing

The detector includes a built-in magnetic test feature.

Qualified technicians can initiate the appropriate test procedure using an approved test magnet.

The control panel then evaluates the detector response and displays relevant operating information.

Therefore, this feature supports routine inspection and maintenance.

However, testing must follow the manufacturer’s instructions and applicable fire alarm requirements.

Compatible Mounting Bases

The Simplex 4098-9764 supports selected 4098 Series addressable mounting bases.

For example, the 4098-9792 provides a standard white mounting option.

The 4098-9789 supports remote LED or relay connections. Meanwhile, the 4098-9793 provides IDNet communication isolation.

Additional relay and sounder base options are available for approved applications.

The mounting base is sold separately unless specifically included in the product package.

Environmental Operating Requirements

The detector has a UL-listed ambient temperature range of 32°F to 100°F (0°C to 38°C).

Its manufacturer-specified operating range extends from 15°F to 122°F, subject to applicable listing requirements.

It supports relative humidity from 10% to 95%.

In addition, its optical sensing section is rated for air velocities up to 4,000 feet per minute.

Typical Applications

This intelligent multisensor detector supports compatible commercial and institutional fire alarm systems.

Typical applications include offices, schools, hotels, healthcare facilities, retail properties, warehouses, and other approved environments.

Its combined optical and thermal sensing capabilities support professional fire alarm system design and maintenance.

Installation and Compatibility

Before installation, verify the control panel, IDNet communication requirements, mounting base, and device address.

Also, confirm the selected sensitivity, thermal alarm settings, and environmental conditions.

Qualified fire alarm professionals should install, configure, and test the detector according to Simplex instructions and applicable fire alarm codes.

Overall, the Simplex 4098-9764 combines optical fire sensing, electronic thermal detection, intelligent IDNet communication, and TrueSense analysis in one addressable device. Its advanced monitoring and diagnostic capabilities make it a practical choice for compatible Simplex fire alarm installations.

4098-9764 Datasheet