SINIWO is a longstanding Chinese brand specializing in industrial explosion-proof telephones. As a leading manufacturer and supplier, we are committed to providing customers with high-quality products at competitive prices. We build the SINIWO brand on a foundation of advanced technology, a solid reputation, and comprehensive services.
SINIWO’s explosion-proof telephone handset was originally designed for traditional payphones, but it is also compatible with any public telecommunication system equipped with anti-vandal caps. This design significantly enhances its vandalism resistance in public areas.
For outdoor environment, UL approved ABS material and Lexan anti-UV PC material are available and it could keep good appearance after used many years. With noise canceling microphone and hearing-aid speaker, this explosion proof telephone handset could be chose for hearing-impaired person and noise reducing microphone could cancel the noise from background.It could be used in any public telephones, outdoor payphones, outdoor emergency telephones or outdoor kiosk.

| Model No. | A11 |
| Waterproof Grade | IP65 |
| Ambient Noise | ≤60dB |
| Working Frequency | 300~3400Hz |
| SLR | 5~15 dB |
| RLR | -7~2 dB |
| Working Temperature | Common:-20℃~+40℃ Special: -40℃~+50℃ (Please tell us your request in advance) |
| Relative Humidity | ≤95% |
| Atmospheric Pressure A | 80~110Kpa |
| Logo | customized |
| Color | customized |
– Standard armored cord length 32 inch and 10 inch, 12 inch, 18 inch and 23 inch are optional.

Any appointed connector could be made as customer’s request. Let us know the exact item No. in advance.
