Simplex 4906-9127 Conventional Sounder with Strobe

Description

The Simplex 4906-9127 Conventional Sounder with Strobe is a premium, wall-mounted audible/visible (A/V) notification appliance designed to provide clear, high-impact emergency signaling within modern commercial, institutional, and industrial facilities. Combining an efficient electronic horn chamber and a high-intensity xenon flash tube into a single, integrated wall-mount enclosure, this non-addressable appliance delivers superior coverage metrics while simplifying system deployment. Built with a rugged, vandal-resistant red thermoplastic shell featuring high-visibility white “FIRE” lettering, it offers a durable and code-compliant solution for enterprise-level real estate safety loops.

Technical Specifications Table

Multi-Candela Setup Selection & SmartSync Two-Wire System Advantages

The core advantage of installing the Simplex 4906-9127 Conventional Sounder with Strobe is its field-selectable multi-candela matrix. During physical device installation, field technicians can adjust a selection plug located on the back of the module to lock in an intensity output of 15, 30, 75, or 110 candela. An integrated yellow indicator flag with clear black letters extends to the side of the lens, allowing inspectors to easily verify the selected rating without opening the sealed frame. This multi-candela design minimizes on-site stock requirements, allowing engineers to deploy a single model across rooms of varying dimensions while easily adapting to changes on the fly during project construction updates.

Additionally, the module utilizes standard two-wire SmartSync loop functionality to optimize wiring runs. When mapped to a compatible central controller, both audio commands and synchronized optical data streams are carried concurrently over a single pair of circuit wires. This configuration allows the host panel to silence the horn elements manually (“on-until-silenced”) while commanding the high-output strobes to continue flashing (“on-until-reset”) until the central system is completely reset. This eliminates the need for separate four-wire notification lines, significantly dropping system setup labor, conduit weights, and copper investments.

• Regulated Power-Limited Circuitry: Features a regulated circuit design that ensures a consistent flash output and controlled inrush current peaks across long loop wire runs.
• NFPA 72 Flash Synchronization: Drives a locked 1 Hz flash sequence across all devices on the NAC channel, preventing photosensitive health risks when multiple strobes intersect a single field of view.
• Convenient Front Terminal Placement: Screw terminals are positioned on the face of the module and remain accessible with the outer cover plate removed, making loop testing and inspection fast and simple.
• Flexible Backbox Compatibility: The low-profile backend mechanism does not extend deep into wall spaces, mounting smoothly onto single-gang, double-gang, or 4-inch square boxes.

Frequently Asked Questions (FAQ)

Q1: How can an inspector verify the selected strobe candela rating without detaching the horn strobe module?
A: The module features an attached yellow indicator flag with bold black letters that extends to the side of the strobe lens, allowing anyone to verify the selected candela output at a glance.

Q2: Does this combination appliance require separate wiring loops for the horn and the strobe?
A: No. When connected via a compatible SmartSync circuit, both devices share a single pair of low-voltage wires, allowing the horn to be silenced independently while the strobe remains flashing.

Q3: What are the exact candela thresholds available for adjustment on the 4906-9127 model?
A: The onboard selection plug can be set to four distinct light intensity outputs: 15, 30, 75, or 110 candela, making it easy to adapt the device to various room sizes.

Q4: Is the outer red faceplate cover removable for maintenance or color modifications?
A: Yes. The rugged cover assembly can be quickly removed using a flat-tip screwdriver. Simplex also offers separate replacement covers to convert the module color on-site if building specifications change.

Q5: What are the decibel sound output capabilities of the internal electronic sounder?
A: Operating on a nominal 24 VDC loop, the module delivers a clear 94 dBA continuous tone in anechoic chambers and an 88 dBA continuous tone inside standard UL 464 reverberant spaces.

Q6: Which central fire alarm control panels provide native support for SmartSync two-wire control loops?
A: It operates seamlessly with standard intelligent Simplex panels—including the 4006, 4007ES, 4008, 4010ES, and 4100ES controllers—or by adding external 4905-9938 SmartSync modules.

Q7: What is the official compliance standard for the integrated strobe element?
A: The strobe is officially listed under UL Standard 1971, which governs visible emergency signaling devices used to assist hearing-impaired occupants.