1、MULTIPLE FUNCTIONS: Noise sensor is a digital, modular, multi functional sound level meter, which can be used inside and outside, helps a lot 2、STABLE AND RELIABLE: Noise sensor adopts digital signal processing chip and digital detection technology, which has the advantages of high reliability, good stability, wide dynamic range and no need for range conversion 3、APPLICABLE SCENARIO: Noise transducer can be widely used in all kinds of machines, vehicles, ships, electrical appliances and other industrial noise measurement, can also be used for environmental noise, labor protecting, industrial health measurement 4、ACCURATE AND LONG LASTING: This is a complex and accurate device for accurate measurement of sound. The instrument has a long lasting structure and can be used normally for several years under proper operating conditions 5、STABLE ALUMINUM ALLOY: Decibel noise tester sensor is made of excellent aluminum alloy material, light weight, possess good strength and prevent erosion
Specification
Item Type: Noise Sensor
Product Size: Length: Approx. 292mm / 11.5in
Power Supply: DC 9-30V
Output Form: RS232
Measuring Range: 30~130dB (A)
Sensitivity: -38±3dB(or 12.6mv/Pa)
Resolution: 0.1dB
Accuracy: ±3dB, at ambient temperature 23±5℃, frequency weighted according to IEC 61672 type 2 standard, calibrated at input signal 94dB (1kHz)
Frequency Range: 20Hz to 12.5kHz
Response Time: 200ms, the time response simulates the time response of the human ear
Calibrator: Multi function sound calibrator, model 4231
Microphone: Electret microphone
Directivity: Omnidirectional
Microphone Size: 0.5in
Load Capacity: Current type output impedance ≤350Ω for DC12V power supply; Current type output impedance ≤900Ω, voltage type output impedance ≥1KΩ for DC24V power supply
Maximum Power Consumption: 500mW
Material: Aluminum alloy
Working Environment: Temperature -40℃ - 80℃
Humidity: ≤100%RH No condensation
Protecting Class: IP55
Weight: 418 g / 14.7 oz(approx.)
Troubleshooting:
The meter displays incorrect values at output. The correct data cannot be obtained because the cable connection is faulty or the communicating serial port is faulty. Check whether the cable connection is correct and secure, whether the serial port is occupied, and whether the serial port settings are correct.
The Line Sequences Are:
Red: Power supply positive
Black: Connect to RX on pin 2 of serial port
Huang: Connect to pin 3 TX of the computer serial port
Green: Power supply negative
Package List
1 x Noise Sensor
1 x Cable
1 x Manual
Note
1. Please check the packaging for integrity and confirm that the product model matches the one you selected;2. Do not connect the wires while they are live, only power on after confirming the connections are correct;
3. The length of sensor wires may affect the product output signal, do not modify the product arbitrarily during use;
4. Sensors are accurate devices, users should not disassemble them, use incisive objects, or corrosive liquids to touch the sensor surface to avoid damaging the product.

Products received faulty, damaged, or not as described are eligible for a return, refund, or replacement in accordance with local consumer laws. We are committed to ensuring all products meet the standards of quality and reliability expected by our customers. Please note that we do not accept returns or provide refunds for change of mind. We encourage you to carefully consider your purchase to ensure it meets your needs and expectations.