Expert
Grewus Acoustic Products
Submissions to WP.29 bodies: Ten documents (latest document: 13 July 2021)

Grewus develops, designs and manufactures audio and visual signaling devices that warn, remind or alert for varied applications in many industries like automotive, commercial vehicles, white goods, medical products, telecom and EMS/ODM manufacturers.

You can find more information about Grewus at their website.

2021 July 13
Audible reversing warnings: Revised proposal for component-level testing | TFRWS-26-02/Rev.1
2021-07-13 2021-07-12 12:07:49 UTC
2021 June 21
Audible reversing warning: Comments on the draft text | TFRWS-23-08
2021-06-21 2021-07-01 17:04:01 UTC
2020 October 29
Verification method for reversing warning with self-adjusting sound level | TFRWS-14-03
2020-10-29 2020-10-29 09:21:24 UTC
2020 October 16
Reserving warning sound measurement: 7 m proposal | TFRWS-13-03
2020-10-16 2020-10-16 14:59:33 UTC
2020 August 7
Reversing Warning Systems: Measuring Report-GREWUS "PeTer" free-field tests | TFRWS-11-02/Rev.1
2020-08-07 2020-06-24 16:22:08 UTC
2019 October 23
Calculation of sound pressure levels at varying distances | TFRWS-09-05
2019-10-23 2019-10-23 18:01:36 UTC
2019 September 5
Measurement Method Proposal for self-adjusting reverse warning devices | TFRWS-08-03
2019-09-05 2019-09-05 14:25:36 UTC
2019 June 24
Measurement Report: Ambient Noises and Audible Reverse Warning Devices | TFRWS-06-06
2019-06-24 2019-06-24 09:51:10 UTC
2019 January 4
Grewus comments on draft reversing warning devices regulation | TFRA-04-06
2019-01-04 2019-01-18 01:52:20 UTC
2019 January 4
Explanations for Grewus proposals on reversing warning device requirements | TFRA-04-07
2019-01-04 2019-01-18 01:57:51 UTC