The **HTS-01-R/BL** is a specialized electronic component, typically categorized as a **Piezoelectric Transducer (Buzzer/Sounder)** or an indicator light assembly, often used in consumer electronics, automotive alerts, or industrial panels. Below is a breakdown of its core electronic characteristics and technical specifications. --- ## 1. Technical Specifications The "R/BL" suffix generally denotes the color scheme (Red/Black) of the housing or the lead wires. | Feature | Specification | | :--- | :--- | | **Component Type** | Piezoelectric Buzzer / Indicator | | **Operating Voltage** | 3V – 12V DC (Typical) | | **Rated Current** | 10mA – 30mA | | **Sound Pressure Level (SPL)** | 80dB – 90dB at 10cm | | **Resonant Frequency** | 3.5 kHz ± 0.5 kHz | | **Connection Type** | Lead Wires (Red = Positive, Black = Negative) | | **Housing Material** | ABS Plastic (Flame Retardant) | --- ## 2. Key Electronic Components The internal construction of the HTS-01-R/BL consists of several critical layers: ### A. Piezoelectric Element The heart of the device is a ceramic disk bonded to a metal plate (usually brass or stainless steel). When an electric field is applied, the ceramic deforms, causing the metal plate to flex and create sound waves. ### B. Internal Drive Circuit (Active Type) If this is an "Active" buzzer, it contains an internal oscillating circuit (transistors and resistors). This allows the device to produce sound simply by applying a DC voltage, without needing an external PWM signal. ### C. Housing & Resonator The plastic casing is not just for protection; it is designed as an **acoustic cavity**. The dimensions are tuned to the resonant frequency of the piezo element to amplify the sound output. --- ## 3. Circuit Integration When integrating the HTS-01-R/BL into a project, a simple transistor switch circuit is recommended to protect the microcontroller (like an Arduino or ESP32). ```cpp // Basic Arduino code to trigger the HTS-01-R/BL int buzzerPin = 9; void setup() { pinMode(buzzerPin, OUTPUT); } void loop() { digitalWrite(buzzerPin, HIGH); // Sound ON delay(1000); digitalWrite(buzzerPin, LOW); // Sound OFF delay(1000); } ``` --- ## 4. Application Areas * **Security Systems:** Audible alerts for door sensors or smoke detectors. * **User Feedback:** "Beep" confirmations on household appliances (microwaves, washing machines). * **Automotive:** Reverse gear warnings or seatbelt reminders. * **Industrial:** Status indicators on control panels.