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Type | RMB-12A03 | RMB-12A05 | RMB-12A12 |
Rated Voltage | 3V | 5V | 12V |
Opcration Voltage | 2.5V~4V | 4V~7V | 8V~15V |
Rated Current | ≤ 35mA | ≤ 30mA | ≤ 20mA |
Sound Output | ≥ 82dB | ≥ 85dB | ≥ 85dB |
Resonant Freq | 2300±500 Hz | 2300±500 Hz | 2300±500 Hz |
Operating Temp | -20℃ ~ +60℃ | -20℃ ~ +60℃ | -20℃ ~ +60℃ |
Storage Temp | -20℃ ~ +70℃ | -30℃ ~ +85℃ | -30℃ ~ +85℃ |

Power Sources | Battery, Battery holder, Power supply, Solar cell |
Discrete Passive Components | Resistors, Capacitors, Inductors, Crystals, Transformers Discrete Active Components: Diode, Transistor, Thyristors |
Basic Passive Circuits | Current, Voltage dividers, Alternators, RC delay circuits, filters Discrete Circuits: Rectifiers, Amplifiers, Oscillators, mixers,modulators, voltage multipliers, regulators, etc |
Integrated Circuits | many popular IC chips |
Digital Circuits | Logic gates, counters, timers, processors, shift registers |
Circuit Construction | Prototype, Solder, Iron, Enclosure, PC board |
Test Equipment | Oscilloscope, Multimeters, Logic probes, Function generator, Frequency, Counter |
Input Devices | Switch, Keyboard, Mic, Sensor module, Phototransistor, Thermistor, Strain gauge, Generator |
Output Devices | Speaker, Buzzer, Solenoid, DC motor, Stopper, RC servo, LED, Display LCD, Lamp |

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