The Simplex 4098-9403 is a 200°F fixed-temperature electronic heat detector. It is used on two-wire conventional fire alarm initiating device circuits. The catalog number is 0677006.
First, the 4098-9403 uses a fast-response thermistor element. As a result, its thermal lag is minimal — the detector is inherently rate-compensated. Then, when the thermistor reaches 200°F (93°C), the detector latches into alarm.
In addition, the design is fully solid-state and epoxy-encapsulated. Therefore, the detector self-restores after the alarm condition clears. No mechanical reset is required.
Key Features of the Simplex 4098-9403
- 200°F (93°C) fixed-temperature thermistor detection
- Operating voltage 15–32 VDC, 30% maximum ripple
- Standby current 80 µA nominal
- Alarm current up to 100 mA, limited by the connected IDC
- UL maximum spacing 60 ft × 60 ft (fixed-temperature)
- Humidity 10–95% RH; not rated for outdoor use
- Storage temperature 0°–140°F (–18° to 60°C)
- Ambient operating range 32°–150°F (0° to 66°C)
- On-board LED alarm indicator
- Self-restoring epoxy-encapsulated design
- UL 521 listed; CSFM listed; FM Approved; MEA (NYC) accepted
Installation Notes
The 4098-9403 is a two-wire direct-connect device. Therefore, no separate base is required. Furthermore, a mechanical adapter plate is supplied for ceiling or wall mounting. Wiring attaches directly to the detector’s screw terminals.
Panel Compatibility
The Simplex 4098-9403 is compatible with Simplex conventional 2-wire IDCs. Specifically, it works with the 4006, 4010, 4100, 4100U, and other Simplex panels offering 2-wire IDC support.
Order the Simplex 4098-9403
Life Safety Consultants has supplied commercial Simplex heat detectors since 2002. For technical questions about the 4098-9403, call 1-888-557-0558. Alternatively, email sales@lifesafetycom.com.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | .25 lbs |
|---|---|
| Dimensions | 4 × 4 × 2 in |
| Condition | New |
| Part Type | Heat Detector |
| Compatible Panels | Simplex conventional 2-wire IDC panels (4006, 4010, 4100, 4100U, and others with 2-wire IDC) |
| Cross Reference | 0677006 |
| Specification | 200 deg F (93 deg C) fixed temperature, 15-32 VDC 30% max ripple, 80 uA standby, 100 mA max alarm, UL 521 listed, 60 ft x 60 ft UL spacing, 10-95% RH, storage 0 to 140 deg F |








