JSP Sonis 1 Ear Defenders - SNR 27 BSI Kitemark Certified

JSP Sonis 1 Ear Defenders - SNR 27 

JSP Sonis 1 overhead ear defenders designed for workers in moderate industrial noise environments where precise, controlled attenuation is required to meet the Control of Noise at Work Regulations 2005. With an SNR 27 rating independently certified by BSI to BS EN 352-1:2002, the Sonis 1 delivers compliant hearing protection for workshops, light manufacturing, printing facilities, landscaping, and construction groundwork where noise levels measure between 100 and 112dB. The BSI Kitemark distinguishes this product from CE-marked-only alternatives, providing procurement teams with independently verified, auditable certification that satisfies CHAS, ISO 9001, and Crown Commercial Service supply chain requirements.

Why SNR 27 is the correct specification, not a compromise

Selecting hearing protection means matching the SNR rating to the measured noise level in the work environment. The Control of Noise at Work Regulations 2005 explicitly require employers not to over-protect workers, as excessive attenuation prevents wearers from hearing warning signals, verbal safety communications, and emergency alerts. For environments measuring between 100 and 112dB, SNR 27 is the precisely correct specification. Choosing a higher SNR in these environments creates a compliance risk, not a safety improvement.

Key Features

• SNR 27 dB, BS EN 352-1:2002: Independently tested and certified by BSI. The SNR figure is third-party verified, not self-declared by the manufacturer

• BSI Kitemark KM 662534: Ongoing production surveillance by BSI ensures every unit meets the certified standard, not just the type-tested sample. Certificate valid to September 2027

• UKCA certified: UKCA 745070, effective February 2025, confirming compliance with UK PPE Regulation 2016/425 as amended for Great Britain

• Adjustable stainless steel arms: Wearer can tilt and reposition each earcup independently for even pressure distribution and a secure acoustic seal across different head sizes and shapes

• Over-moulded TPE headband with ventilation: Headband force and cushion surface area engineered together to maintain consistent cushion pressure during extended wear without excessive clamping

• ABS earcups with TPU cushions and PU foam inner: Materials selected for acoustic performance, durability, and replacement serviceability

• Wipe-clean TPE headband: Meets site hygiene requirements. Sealing rings replaceable without specialist tools

• Hygiene kits available: Replacement cushions and foam inserts available separately on request, extending product service life

• Customisable earcups: Cups can be colour-matched to corporate identity or printed with a company logo for site identification and theft deterrence. Minimum order quantities apply

• Recyclable: All major components recyclable at end of service life

• ATEX compatible: Tested to EN 80079-36 and EN60079-32-2, confirmed suitable for use in ATEX designated areas 0, 1, 2, 20, 21, 22

Who is this for

Roles:

•  health and safety managers
•  site managers
•  procurement officers
•  workshop supervisors
•  groundskeepers
•  print room operatives
•  light manufacturing operatives

Industries:

• construction
•  light manufacturing
•  printing
•  landscaping
•  agriculture
•  engineering workshops
•  utilities
•  facilities management

 Specifications

Compatibility

Attenuation data

Frequently Asked Questions

Q: What does SNR 27 mean and is this enough protection for my site?
A: SNR stands for Single Number Rating. It represents the number of decibels this ear defender reduces noise by across the full frequency range. To determine whether SNR 27 is correct for your site, subtract 85 from your measured noise level. If the result is 27 or below, the Sonis 1 is the correct specification. For example, a noise level of 112dB requires an SNR of 27, making the Sonis 1 the precise match. For noise levels above 112dB, the Sonis 2 (SNR 31) or Sonis 3 (SNR 37) would be more appropriate.

Q: What is the BSI Kitemark and why does it matter?
A: The BSI Kitemark is an independent certification mark issued by the British Standards Institution. It confirms the Sonis 1 has been tested to BS EN 352-1:2002 by an independent third party, and that JSP's production process is regularly audited to ensure every unit meets the certified standard. CE marking alone requires only a one-time type examination. The Kitemark provides ongoing assurance that is verifiable by certificate number KM 662534 and is recognised by procurement teams operating under CHAS, ISO 9001, and Crown Commercial Service audit requirements.

Q: Why should I not choose a higher SNR than I need?
A: The Control of Noise at Work Regulations 2005 specifically caution against over-protection. An excessively high SNR can prevent workers from hearing verbal safety communications, warning signals, and emergency alerts, creating a different safety risk. Matching the SNR to the measured noise level is both a legal requirement and a practical safety consideration. The Sonis 1 at SNR 27 is the precisely correct specification for moderate noise environments between 100 and 112dB.

Q: Is this product suitable for use in ATEX hazardous areas?
A: Yes. The Sonis 1 has been independently tested to EN 80079-36 and EN60079-32-2 at the GIG-PIB Central Mining Institute of Poland, an accredited notified body for the ATEX directive. It is confirmed suitable for use in ATEX designated areas 0, 1, 2, 20, 21, and 22 without concern for static charge accumulation. Documentation is available on request.

Q: Can I replace the cushions and foam inserts?
A: Yes. Hygiene kits containing replacement cushions and foam inserts are available separately on request. Sealing rings are also easy to replace. Regular inspection and timely replacement of worn cushions is essential to maintain the acoustic performance of the ear defender.

Q: Can the earcups be branded with our company logo?
A: Yes. Sonis earcups can be colour-matched to a corporate identity or printed with a company logo for site identification and theft deterrence. Minimum order quantities apply. Contact CMT Group for details.

Q: What is the difference between the Sonis 1 head band and the Sonis 1 helmet mounted version?
A: The head band version (AEB010-0AY) is a standalone ear defender worn on an adjustable headband. The helmet mounted version (AEB010-0CY) attaches directly to compatible JSP safety helmets including the EVO range. The helmet mounted version has an SNR of 26 rather than 27 due to the slightly reduced acoustic seal when mounted via the helmet attachment arm rather than worn directly on the head. If workers on your site wear JSP safety helmets, the helmet mounted version integrates directly without requiring a separate headband.

Q: How quickly can I get these delivered?
A: Order by 7pm for next-day delivery on stocked lines. CMT Group operates its own delivery fleet covering over 95% of the UK mainland with live order tracking and What3Words integration for accurate site delivery. Trade accounts, EDGE procurement portal access, and FASTPoints loyalty programme available for regular B2B customers. VIP same-day delivery is also available.