https://www.zemzone.com/home daily 1.0 2026-02-12 https://images.squarespace-cdn.com/content/v1/65f1f009a53c1045f1a8d1a4/7d3a0281-6a01-4d7c-84b2-646f65f62bf0/DSC01242.jpg https://images.squarespace-cdn.com/content/v1/65f1f009a53c1045f1a8d1a4/59094d3c-145c-4cae-ba2d-79db304cd421/DSC07340%2Bv4-2.jpg https://www.zemzone.com/instructions daily 0.75 2026-02-12 https://images.squarespace-cdn.com/content/v1/65f1f009a53c1045f1a8d1a4/50ffc269-b725-4a8a-8b4b-4552abd42cb4/SensGard_InstructionCard+%283%29.jpg https://images.squarespace-cdn.com/content/v1/65f1f009a53c1045f1a8d1a4/e9fac435-f995-4567-9430-10b5cbaf36b3/DSC03247-2.jpg https://www.zemzone.com/contact daily 0.75 2026-02-11 https://www.zemzone.com/warranty daily 0.75 2026-02-11 https://images.squarespace-cdn.com/content/v1/65f1f009a53c1045f1a8d1a4/42a5bf0b-3454-4234-b069-5097ef811152/DSC01245-4.jpg https://www.zemzone.com/technical daily 0.75 2026-02-12 https://images.squarespace-cdn.com/content/v1/65f1f009a53c1045f1a8d1a4/0c0ced33-a7ae-46fc-97a7-6538f4e2e357/Instruction+page+2+26.jpg Technical Table showing hearing protection testing standards and mean attenuation data https://images.squarespace-cdn.com/content/v1/65f1f009a53c1045f1a8d1a4/6a16a7c0-33a7-43f6-8323-c6f728ae1363/Instruction+page+2+31.jpg Technical Testing standards and performance data for ear protection, showing mean attenuation and standard deviation in decibels across various frequencies. Includes U.S. and Europe independent testing data and addresses fitting instructions. https://images.squarespace-cdn.com/content/v1/65f1f009a53c1045f1a8d1a4/04663c7b-ba2e-424e-963a-67a441e5ce8f/CE.jpg Technical CE marking symbol on a white background https://images.squarespace-cdn.com/content/v1/65f1f009a53c1045f1a8d1a4/ad6a2c0e-7de6-46f3-86b6-2b53292f129d/CE_SNR.jpg Technical INSPEC test report page with attenuation values from the University of Salford, School of Computing, Science and Engineering. Values: H = 21, M = 19, L = 15, SNR = 12.