This passenger emergency alarm protective cover is made of high-toughness solid polycarbonate sheet. It adopts precision machining to form pre-breaking grooves, microphone sound transmission dots and reserved holes. Bilingual silk-screen warning signs are printed on the frosted panel. In emergencies, the cover can be broken quickly to press the alarm button. It is widely used in buses, coaches, rail transit and other public transport emergency alarm devices. Compared with glass, PC produces no sharp shards after breaking and greatly improves safety.

City bus, coach passenger emergency alarm device

Subway, light rail and other rail transit emergency control panel

Public vehicle emergency button protective cover

Emergency fire alarm breakable replacement panel

Transportation equipment instrument protective plate

Q1: Why use PC instead of glass for the alarm cover?

A: PC breaks without sharp fragments, reduces secondary injury risk, better impact safety for public transport.

Q2: Is the breaking groove customisable?

A: Yes, we can adjust pre-scored breaking line depth and position according to your required breaking force.

Q3: Can we customise the printing text and pattern?

A: Yes, custom silk-screen text, logo, bilingual or multi-language content available.

Q4: What surface options are available?

A: Frosted matte as standard; clear transparent, anti-scratch coating can be customized.

Q5: Can we supply flame retardant PC version?

A: Yes, flame retardant polycarbonate sheet is available for public transit projects.

Q6: What certifications do you have?

A: It meets CE and RoHS standards.