1. GRP speaker, impact-resistant, corrosion-resistant, IP66 rated
2.15W power consumption
3. Voice recording via microphone, Voice burning via computer to edit alarm contents
4. Voice playing by activating alarm via power or dry contact
5. Explosion-proof type: CNS Certification：Ex d IIB+H2 T6 Gb X / Ex tD A21 IP65 T85℃ X
6. CQST Certification：Ex d IIC T6 Gb / Ex tD A21 IP66 T80℃
7. IECEx / ATEX Certification：Ex db IIC T6 or T5 Gb，Ex tb IIIC T80℃ Db IP66
8. Patent in Taiwan: M460474
9. YOUTUBE: https://youtu.be/rmOMe5fpTZ4