The **SCE048LD3VC3F** is a specialized electronic audio signaling device manufactured by **Mallory Sonalert Products**. It belongs to the SCE series of panel-mount buzzers, designed for industrial applications requiring high reliability and specific acoustic patterns. --- ### 1. Technical Specifications Table | Parameter | Specification | | :--- | :--- | | **Manufacturer** | Mallory Sonalert Products | | **Voltage Rating** | 28 to 48 Volts DC | | **Current Consumption** | 40 mA (Maximum) | | **Frequency** | 2900 ± 500 Hz | | **Sound Intensity** | 85 to 95 dB @ 2 Feet | | **Tone Type** | Medium Pulse (approx. 2 - 10 PPS) | | **Mounting Type** | Panel Mount (30mm hole) | | **Termination** | Screw Terminals | | **Housing Material** | 6/6 Nylon, Color: Black | --- ### 2. Detailed Part Breakdown The model number can be decoded to understand the specific characteristics of the component: * **SCE:** Series prefix (Smart Control Electronics). * **048:** Maximum operating voltage (48V DC). * **L:** Sound level (L = Loud, typically 85-95 dB). * **D:** Voltage type (D = DC Only). * **3:** Frequency range (3 = 2000Hz to 3000Hz range). * **VC:** Voltage Control / Variable Control features (allows for volume/logic integration). * **3:** Pulse rate (Medium pulse speed). * **F:** Specific suffix for terminal type or mounting configuration (Flat/Functional). --- ### 3. Key Electronic Features * **Medium Pulse Tone:** Unlike a continuous siren, this unit emits a "beep-beep-beep" pattern, which is more effective at capturing human attention in noisy environments. * **NEMA 4X Rating:** When used with the appropriate gasket, the front face is protected against windblown dust, rain, and hose-directed water, making it suitable for outdoor industrial panels. * **Solid State Electronics:** The device uses internal circuitry to generate the frequency and pulse, meaning there are no moving mechanical contacts to wear out or spark. * **Low Power Consumption:** At only 40mA, it can be driven directly by most PLC (Programmable Logic Controller) digital outputs without the need for an intermediate relay. --- ### 4. Typical Applications 1. **Industrial Control Panels:** Warning indicators for machine faults or process completion. 2. **Material Handling:** Back-up alarms or movement alerts on small electric vehicles. 3. **Agriculture:** Feedback signals for automated feeding or irrigation systems. 4. **Medical Equipment:** High-priority audible alerts for diagnostic machinery.