The Simplex 4906-9127 is a wall-mount horn/strobe in a red housing. It belongs to the TrueAlert multi-candela non-addressable notification line. The unit pairs a 24 VDC electronic horn with a high-output xenon strobe.
First, install the appliance to a standard single-gang, double-gang, or 4 in square electrical box. Then, set the desired candela rating with the plug on the back. Specifically, you can select 15, 30, 75, or 110 cd. As a result, you stock one part number for many room sizes.
Why Choose the Simplex 4906-9127
The 4906-9127 runs on Simplex SmartSync two-wire NAC operation. Therefore, the horn and the strobe share one circuit. However, the panel can silence the horn while the strobe stays flashing. Specifically, the horn is “on-until-silenced” and the strobe is “on-until-reset”.
In addition, strobes on the same SmartSync circuit flash in unison at 1 Hz. As a result, the appliance meets NFPA 72 synchronization requirements within a common field of view.
Key Features
- Combined horn and strobe in one wall-mount unit
- Multi-candela strobe: field-selectable 15, 30, 75, or 110 cd
- Red high-impact, flame-retardant thermoplastic housing with white “FIRE” lettering
- Clear strobe lens
- Low-current electronic horn — harmonically rich output
- Horn patterns: steady, ANSI Temporal, or 60 BPM March Time
- SmartSync two-wire NAC operation
- 1 Hz synchronized strobe flash
- Wiring terminals accessible from the front of the housing
- Cover removable with a tool — color-conversion covers sold separately
Approvals and Standards
- Strobe operation: UL Standard 1971 listed (signaling devices for the hearing impaired)
- Horn operation: UL Standard 464 listed
- UL, ULC, CSFM listed; FM approved
- ADA Title III compliant for combined audible/visible notification
Compatible SmartSync Control Sources
- Simplex 4007ES Hybrid, 4010ES, 4100ES, and 4100U fire alarm control panels
- Simplex 4006, 4008, and 4010 panels
- 4009 IDNet NAC Extenders
- 4905-9938 SmartSync Control Module (SCM)
Typical Applications
- Commercial corridors, stairwells, and lobbies
- Mechanical and electrical rooms
- Warehouses and manufacturing facilities
- Healthcare, education, and hospitality occupancies
- Anywhere a red notification appliance is specified by the AHJ
Related Products
- 4906-9101 — TrueAlert multi-candela strobe only, red, wall mount
- 4906-9129 — TrueAlert horn/strobe, white, wall mount
Order or Get Application Help
Life Safety Consultants has supplied genuine Simplex TrueAlert appliances since 2002. To order the Simplex 4906-9127 or confirm 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 | .50 lbs |
|---|---|
| Dimensions | 5.5 × 5.5 × 5.5 in |
| Condition | New |
| Part Type | Fire Alarm, Horn Strobe, Multi-Candela, Strobes |
| Manufacturers | Simplex |
| Compatible Panels | 4100ES, 4010ES, 4008, 4010, 4100U, 4020, 4100, 4120 |
| Cross Reference | 4906-9129 (White wall), 4906-9128 (Red ceiling), 4906-9130 (White ceiling) |
| Type | Horn strobe, audible/visible, Color: Red, Mount: Wall, Voltage: 24 VDC, Candela: 15/30/75/110 selectable, Protocol: SmartSync two-wire NAC, Standards: UL 1971, UL 464, ADA: Yes |







