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Designed by extreme environments, The telephone adopted a robust die-cast aluminum shell with a weatherproof, polyurethane-coated enclosure.
It is adapt to harsh conditions such as high humidity, dust,shock, vibration,saltwater, and physical abuse.
Very suitable for outdoor and industrial application, including highways, tunnels, wind farms, production areas, chemical, Power plants, and heavy machinery like container cranes and ship loaders.

| Basic Features | |
| Ex mark | Ex d ib IIB T6 Gb |
| Waterproof Rate | IP68 |
| Ringing Sound Level | ≥80 db at 1 meter |
| External Speaker | >110 db at 1 meter ( optional) |
| Noise cancellation | Optional |
| Full-duplex communication | Support |
| Enclosure Material | Aluminium alloy die-casting Powder coating treatment Outdoor UV protection |
| Color | Red ( default) |
| Emergeny button | One Stainless Steel Button |
| Power supply | DC 12 V/2A or POE |
| Power consumption | Standby:1.5W, Working power: 3W (without external speaker) |
| Working temperature | Operating temperature: -40°C to + 70°C Storage temperature: -40°C to +75°C |
| Mean Time Between Failures | More than 50,000 hours |
| VoIP Features | |
| Protocol | SIP 2.0(RFC3261) |
| Registration line | 2 lines at same time |
| Codec | G.711A/u, G.7231 high/low, G.729, G.722,G.726 |
| Echo cancellation | Support G.168, Hands-free :max 96 millisecond |
| Network | 10/100 Mpbs WAN/LAN: Support bridge mode Support virtual LAN Support stun NAT penetration |

Maritime

Highway / Tunnel

Railway

Power - Station

Mining industry

Industrial park

| Package | |
| Unit size | 373*282*137(mm) |
| Packaging materials | corrugated box, pearl cotton lining |
| Weight | Net weight : about 8 KG / Gross Weight :10 KG |