The Simplex 4098-9773 is a TrueAlarm® ES (Enhanced Series) carbon monoxide sensor base with an integrated 520 Hz low-frequency sounder. The 520 Hz output of the 4098-9773 satisfies NFPA 72 requirements for audible CO notification in sleeping areas, where low-frequency signals are mandated to awaken occupants more effectively than standard high-frequency tones.
Designed for the Simplex 4100ES platform and its IDNet addressable loop, the 4098-9773 combines CO sensing and local audible notification in a single base unit, reducing installation complexity in hotel rooms, dormitories, assisted living facilities, and other sleeping occupancies.
- CO detection: Electrochemical CO sensor element
- Sounder: Integrated 520 Hz low-frequency audible output
- Compliance: Meets NFPA 72 sleeping area CO notification requirements
- Loop interface: IDNet addressable (4100ES)
- Series: TrueAlarm ES Enhanced Series
The 4098-9773 is the Enhanced Series successor to the 4098-9771 and is the preferred choice for new 4100ES installations requiring sleeping area CO compliance.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | .5 lbs |
|---|---|
| Dimensions | 6.5 × 6.5 × 1.25 in |
| Manufacturers | Simplex |










