RT-ZS-BZ-TTL-12 10-28V 30dB–130dB Sound Detection Sensor - TTL

RT-ZS-BZ-TTL-12 10-28V 30dB–130dB Sound Detection Sensor - TTL

The RT-ZS-BZ-TTL-12 10-28V 30dB–130dB Sound Detection Sensor (TTL) is a compact noise measurement module capable of measuring ambient noise in dB(A) and transmitting the results directly to microcontroller systems via serial TTL communication.

TTL is particularly suitable for short-range serial communication connections with microcontroller systems such as Arduino, STM32, ESP32, and similar platforms.

The measurement range is 30–130 dBA, and the frequency response range is 20 Hz–12.5 kHz.

Specifications

• Operating Voltage: 10–28V DC
• Communication: UART TTL
• Serial Communication: 9600-N-8-1
• TTL Output Level: 0–3.3V
• TTL Input Level: 0–3.3V
• 5V Input Tolerance: Yes
• Measurement Range: 30–130 dBA
• Frequency Weighting: A-weighting
• Frequency Response: 20 Hz–12.5 kHz
• Accuracy: ±0.5 dB @ 94 dB / 1 kHz
• Reference Sound Pressure: 20 µPa
• Fast Mode Response Time: Approx. 500 ms
• Slow Mode Response Time: Approx. 1.5 s
• Stability: <2%
• Microphone: Pre-polarized back-electret condenser
• Consumption: Approx. 18.9mA @5V
• Operating Temperature: -20°C ~ +60°C
• Operating Humidity: 0–95% RH, non-condensing
• Operating Pressure: 65–106 kPa
• Pin Pitch: Standard 2.54 mm
• Fast / Slow Mode: Selectable via jumper