The Simplex 4098-9789 is a TrueAlarm analog sensor base with screw-terminal connections. It mounts Simplex 4098-series addressable sensors to a standard electrical box. In addition, it carries the loop wiring on captive screw terminals for clean field connections.
Specifically, the 4098-9789 is the “with connections” variant. As a result, installers wire to terminals on the base rather than splicing leads. The companion 4098-9788 is the same base without the terminal block.
How the Simplex 4098-9789 Works
First, the base mounts to a standard electrical box. Then, a TrueAlarm sensor head twists into the base. As a result, the sensor and base together form a complete addressable detector.
Furthermore, the loop carries both power and digital communications. Therefore, the host panel can poll the sensor for analog values and report individual device status.
Compatible Sensor Heads
The 4098-9789 accepts the standard Simplex TrueAlarm 4098-series sensors. Examples include:
- 4098-9714 — TrueAlarm photoelectric sensor
- 4098-9733 — TrueAlarm ionization sensor
- 4098-9733LF — TrueAlarm low-frequency sensor
- 4098-9744 — TrueAlarm heat sensor
- 4098-9754 — TrueAlarm multi-sensor
Always confirm the specific sensor against the active Simplex datasheet before ordering. Also note: some sensors require firmware/panel revisions to address correctly.
Specifications
- Function: TrueAlarm analog sensor base with terminal connections
- Cross-reference: 0677110CN
- Connection: Captive screw terminals on the base
- Mounting: 3.5″ octagonal, 4″ octagonal, 4″ square, or 1-gang electrical box
- Communication: MAPNET II / IDNet addressable loop (loop-powered)
- Companion (no-terminal) version: 4098-9788
- Reference: Simplex data sheet S4098-0023
Compatible Simplex Panels
- Simplex 4100ES
- Simplex 4100U
- Simplex 4100
- Simplex 4010ES / 4010
- Simplex 4020
- Simplex 4120
- Simplex 2120 CDT (when configured for MAPNET II TrueAlarm)
Order the Simplex 4098-9789
Life Safety Consultants stocks the 4098-9789 alongside compatible TrueAlarm sensors. To confirm panel and sensor compatibility, 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 | 0.25 lbs |
|---|---|
| Dimensions | 5 × 5 × 1 in |
| Condition | New |
| Part Type | Analog, Detector Base, Sensor |
| Manufacturers | Simplex |








