The Simplex 4903-9254 is a horizontal wall mount, combination horn and strobe notification appliance delivering a 110 candela xenon strobe output and a harmonically rich 24 VDC electronic horn. The 4903-9254 operates on a regulated 24 VDC NAC (16–33 VDC range) and features switch-selectable free-run or synchronized strobe operation, making it compatible with Simplex SmartSync and 4005-9938-type synchronization modules. The horn and strobe can be wired to the same NAC or to separate circuits using on-board jumpers. This red, horizontal mount model directly replaces the legacy Simplex 4903-9217 and 4903-9238 110 CD horn strobes.
- 110 candela xenon strobe; UL listed to Standard 1971
- Electronic horn output: 84.8 dBA @ 33 VDC, 80.6 dBA @ 16 VDC; 2400–3700 Hz sweep at 120 Hz rate
- Rated voltage: 16–33 VDC (regulated 24 VDC); horn current: 13–16 mA
- Strobe current (110 cd): 285 mA @ 18 VDC, 190 mA @ 24 VDC (max RMS)
- Switch-selectable free-run or synchronized strobe operation
- Horn and strobe can be wired to same or separate NACs
- Red housing; horizontal wall mount
- Housing: 4-3/4″ × 6-7/8″ × 2-5/8″ D; depth into box 11/16″
- Terminals accept 18–12 AWG wire
- Operating range: 32°–120° F (0°–49° C)
- Part number 0626862; data sheet S4903-0005
Compatible Panels: Simplex 4006, 4008, 4100U, 4010 fire alarm control panels; compatible with 4009 IDNet NAC Extender (4009-9201, 4009-9301) for synchronized operation. Also synchronized by 4905-9914 (Class B) or 4905-9922 (Class A) flash modules.
Direct Replacements For: Simplex 4903-9217 (110 CD horizontal) and 4903-9238 (110 CD horizontal).
Life Safety Consultants has stocked Simplex notification appliances—including the 4903-9254—since 2002. Call 1-888-557-0558 or email sales@lifesafetycom.com.
Additional information
| Weight | 4 lbs |
|---|---|
| Dimensions | 4.75 × 7 × 2.5 in |
| Part Type | Horn Strobe, Mount, Strobes |
| Manufacturers | Simplex |
| Compatible Panels | Simplex 4006, 4008, 4100U, 4010, Simplex 4009 IDNet NAC Extender (4009-9201, 4009-9301) |
| Cross Reference | 4903-9217, 4903-9238, 4903-9252, 49039254, 626862, 0626862 |
| Specification | 110 cd xenon strobe, 24 VDC nominal (16-33 VDC), horn 84.8 dBA @ 33 VDC, 2400-3700 Hz sweep, red housing, horizontal wall mount, 4-3/4 x 6-7/8 x 2-5/8 in, 32-120 deg F |
