### SVB-1FW-R/K: Electronic and Technical Specifications The **SVB-1FW-R/K** is a specific electronic component, typically classified as a **Visual/Audible Signaling Device** (often a strobe or combination signal) used in fire alarm systems and industrial notification circuits. It is part of the "Syncable" series, meaning it is designed to synchronize with other units to prevent disorientation caused by unsynchronized flashes. --- ### 1. Key Technical Specifications The following table outlines the primary electronic and physical parameters: | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 24V DC (Nominal) | | **Voltage Range** | 16V to 33V DC | | **Current Draw** | Varies by Candela setting (approx. 50mA - 150mA) | | **Strobe Flash Rate** | 1 Hz (1 flash per second) | | **Mounting Type** | Wall Mount / Weatherproof | | **Synchronization** | Supported via Sync Modules or Power Supplies | | **Operating Temp** | -40°F to 150°F (-40°C to 66°C) | --- ### 2. Electronic Components and Internal Logic The device consists of several critical sub-circuits that manage power and output: #### A. The Flash Circuit (Xenon or LED) * **Capacitor Bank:** Stores high-voltage energy required to trigger the flash. * **Trigger Transformer:** Steps up the low voltage to a high-voltage pulse to ionize the gas (if Xenon) or drive the high-intensity LED array. * **Intensity Control:** Allows for selectable "Candela" (cd) settings (e.g., 15, 30, 75, 110cd), which adjusts the discharge energy. #### B. Synchronization Logic * **Sync Protocol:** The "Syncable" nature means the electronics monitor the power line for a specific "silence" or "sync" pulse sent by the Master Control Radio/Panel. * **Microcontroller:** Coordinates the timing of the flash to ensure all devices in a visual field fire simultaneously. #### C. Environmental Protection * **Potting/Coating:** The internal PCB (Printed Circuit Board) is often conformal coated to prevent moisture ingress, as the "W" in the part number usually signifies **Weatherproof**. --- ### 3. Wiring Configuration The unit typically uses a standard 4-wire or 2-wire configuration depending on the specific base used: ```markdown Terminal 1 (+) -> Positive Input from FACP (Fire Alarm Control Panel) Terminal 2 (-) -> Negative Input from FACP Terminal 3 -> To Next Device (Out +) Terminal 4 -> To Next Device (Out -) ``` --- ### 4. Part Number Breakdown * **SVB:** Series Identifier (Signal Visual/Beacon). * **1F:** Flash/Functionality Type. * **W:** Weatherproof/Outdoor Rated. * **R/K:** Color and Mounting Kit (R = Red / K = Kit or specific Mounting bracket).