The Simplex 4098-9605 is a TrueAlarm analog addressable photoelectric smoke sensor designed for special-application locations where a reduced nominal sensitivity of 3.5%/ft is required. The 4098-9605 uses a pulsed infrared LED light source and silicon photodiode receiver, with analog smoke measurements digitally communicated to the host fire alarm control panel via IDNet or MAPNET II two-wire communications. The sensor provides 360° smoke entry and is compatible with standard 2-wire and 4-wire Simplex TrueAlarm bases. Sensitivity monitoring at the control panel satisfies NFPA 72 requirements; the panel performs automatic environmental compensation and peak value logging for each 4098-9605 individually.
Key Features
- Nominal sensitivity: 3.5%/ft — special-application reduced sensitivity
- Pulsed IR LED source with silicon photodiode; 360° smoke entry
- IDNet or MAPNET II two-wire analog communications
- NFPA 72 sensitivity monitoring satisfied at host control panel
- Automatic environmental compensation; peak value logging
- Compatible with standard 2-wire and 4-wire Simplex TrueAlarm bases
- Magnetic test feature; locking anti-tamper base design
Compatible Panels
4010, 4010ES, 4100ES, 4100U (IDNet); 4020, 4100, 4120 Series with Universal Transponders (MAPNET II); 2120 TrueAlarm CDTs
Compatible Bases
4098-9792 (standard, white), 4098-9776 (standard, black), 4098-9789, 4098-9791 (supervised relay), 4098-9794 (sounder base); 4-wire and 2-wire compatible
Life Safety Consultants has supplied commercial Simplex fire alarm sensors since 2002. For questions about the 4098-9605 or compatible bases, call 1-888-557-0558 or email sales@lifesafetycom.com.
Additional information
| Weight | .25 lbs |
|---|---|
| Dimensions | 4 × 4 × 2 in |
| Condition | New |
| Part Type | Photoelectric, Smoke Detector |
| Manufacturers | Simplex |
| Compatible Panels | 4010, 4010ES, 4100ES, 4100U, 4020, 4100, 4120 Series, 2120 TrueAlarm CDTs |
| Compatible Bases | 4098-9792, 4098-9776, 4098-9789, 4098-9791, 4098-9794 |
| Nominal sensitivity | 3.5%/ft (special application reduced), pulsed IR LED + photodiode, 360-degree smoke entry, IDNet/MAPNET II two-wire communications, compatible with 2-wire and 4-wire Simplex bases |











