ETENWOLF S3 Cordless Tire Inflator Noise Test Report (Internal Standard, 1 m, Front-Face)

Document Overview

Key Findings All three S3 samples measured between 78.7 dB and 80.8 dB at 1 m front-face distance during continuous operation, falling within the evaluated sound-pressure range of 35–100 dB and recorded as for reference only per internal standard. Product: ETENWOLF S3 Cordless Tire Inflator…

Document type

Test Report

Prepared by

Daniel Wright

Published

July 22, 2026

Last reviewed

July 22, 2026

Topics

Noise Testing

Key Findings

All three S3 samples measured between 78.7 dB and 80.8 dB at 1 m front-face distance during continuous operation, falling within the evaluated sound-pressure range of 35–100 dB and recorded as for reference only per internal standard.

• Product: ETENWOLF S3 Cordless Tire Inflator
• Report No.: 2025062901
• Test Date: 2025-06-29
• Samples: 3 units (7#, 8#, 9#)
• Standard: Internal standard — sound pressure level (Lmax 35–100 dB)
• Measurement distance: 1 m, microphone aligned horizontally with product front face
• Result range: 78.7 dB – 80.8 dB
• Verdict: For Reference Only

Test Overview

Test Equipment & Setup

Test Procedure

1. Pre-test: Confirm ambient temperature (23 °C) and relative humidity (60%). Verify the sound level meter is calibrated and functional.
2. Sample preparation: Label three S3 units as 7#, 8#, and 9#. Inspect each unit for any visible defects before testing.
3. Microphone placement: Position the microphone at exactly 1 m horizontal distance from the front face of the product at the same height as the product.
4. Operation: Power on the S3 unit. Allow the unit to reach normal operating state (inflation mode).
5. Measurement: Record the sound pressure level (dB) displayed on the noise meter while the product is operating. Capture the Lmax reading.
6. Repeat: Perform the same procedure for each of the three samples (7#, 8#, 9#) sequentially.
7. Post-test: Power off all samples. Record all measurements and observations in the test data table.

Acceptance Criteria: Sound pressure level must fall within the evaluated range of Lmax 35–100 dB. Results are recorded for reference only per internal standard.

Test Data & Results

Observations: All three samples produced consistent noise readings between 78.7 dB and 80.8 dB at 1 m front-face distance. Sample 9# recorded the lowest value at 78.7 dB; sample 7# recorded the highest at 80.8 dB. The spread across samples is 2.1 dB, indicating good unit-to-unit consistency. All readings fall within the defined evaluation range of 35–100 dB.

Conclusion

Document Information

Frequently Asked Questions

How loud is the ETENWOLF S3 tire inflator during operation?

In controlled testing at 1 m front-face distance, the S3 recorded between 78.7 dB and 80.8 dB across three units. This is comparable to a busy street or a vacuum cleaner, which is typical for a portable tire inflator operating at working pressure.

What test standard was used for the S3 noise test?

The test was conducted against ETENWOLF’s internal standard, which evaluates sound pressure level within a range of Lmax 35–100 dB. The test does not reference an external regulatory standard such as IEC or ISO for this specific measurement.

What does ‘For Reference Only’ mean in the S3 noise test verdict?

‘For Reference Only’ (供参考) indicates that the noise measurements are documented as informational data. The results confirm the S3 operates within the evaluated range but are not used as a pass/fail compliance determination against a mandatory external standard.

At what distance was the noise level of the S3 measured?

The microphone was positioned at exactly 1 m horizontal distance from the front face of the S3 unit while the product was powered on and operating normally. All three samples were measured under identical conditions at room temperature (23 °C) and 60% relative humidity.

Related Products

• ETENWOLF S3 Cordless Tire Inflator — Product Page