T/ZZB 2644-2022
Emergency broadcast multimode loudspeaker (English Version)
- Standard No.
- T/ZZB 2644-2022
- Language
- Chinese, Available in English version
- Release Date
- 2022
- Published By
- Group Standards of the People's Republic of China
- Latest
- T/ZZB 2644-2022
- Scope
- This document specifies the terms and definitions, abbreviations, basic parameters, basic requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage and quality commitments of emergency broadcasting multi-mode sound columns. This document applies to multi-mode loudspeakers for emergency broadcasting (hereinafter referred to as loudspeakers).
T/ZZB 2644-2022 history
- 2022 T/ZZB 2644-2022 Emergency broadcast multimode loudspeaker
