Product details
| Part number | 4903-9426 |
|---|---|
| Description | Horn/Strobe 75cd Red Standard Non-Addressable |
| Category | Notification Appliances / Conventional Horns, Strobes & Speakers |
| System | Simplex TrueAlarm detectors and TrueAlert appliances |
| Works with | Conventional reverse-polarity NACs, 4006 (strobe sync), 4007ES Hybrid (strobe sync), 4008 (strobe sync), 4010 (strobe sync), 4010ES (strobe sync), … |
| Approvals | UL listed (strobe to UL 1971, horn to UL 464); CSFM listed (7125-0026:239); FM approved; MEA (NYC) MEA35-93E; not ULC listed as of document revision |
| Availability | In stock in Riyadh |
| Support | Selection, compatibility and programming help from our engineers |
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About the 4903-9426
Wall-mount non-addressable horn/strobe for 4-wire operation, with red housing, white FIRE lettering and a 75 cd xenon strobe. The electronic horn and the strobe have separate terminals, so they can be wired to separate NACs and controlled independently; on one shared NAC they are not separately controlled. The 24 VDC strobe is switch-set for free-run or synchronized flash, with sync from Simplex synchronized flash modules, compatible panels or 4009 IDNet NAC Extenders.
Horn and strobe are not separately controlled when both are wired to the same NAC, and 16 VDC is the lowest voltage allowed at the last appliance under worst-case conditions.
Specifications
| Strobe output | 75 cd |
|---|---|
| Strobe rated voltage | Regulated 24 VDC (16 to 33 VDC per UL Standard 1971) |
| Strobe current, 75 cd | 192 mA maximum RMS; 171 mA at 18 VDC; 128 mA at 24 VDC |
| Flash rate | 1 Hz; with up to 35 synchronized strobes maximum per NAC |
| Horn rated voltage | 16 VDC to 33 VDC |
| Horn at 24 VDC, 10 ft (3 m), UL 464 reverberant | Steady 25 mA, 88 dBA; Coded 15 mA, 84 dBA |
| Dimensions (including lens) | 5-1/8” H x 5” W x 2-3/4” D (130 mm x 127 mm x 70 mm) |
| Temperature / humidity | 32° to 122° F (0° to 50° C); 10% to 93%, non-condensing at 100° F (38° C) |
Used with
- 4905-9937 – Surface mount red adapter skirt for 1-1/2 in. deep surface mounted boxes
- 4905-9931 – Red adapter plate for Simplex 2975-9145 box
- 4905-9914 – Synchronized Flash Module, Class B
- 4905-9922 – Synchronized Flash Module, Class A
- 4905-9961 – Red wire guard with mounting plate
From Simplex datasheet S4903-0011. The datasheet, UL listing and installation manual can be downloaded under Documents above.









