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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 | |
| Waterproof Rate | IP68 |
| Ringing Sound Level | ≥80 db at 1 meter with Flashlight |
| 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 | Yellow ( default) |
| Handset | ABS+PC, stainless steel armored telephone cable |
| LCD display | Show telephone IP address and caller ID |
| Kepad | Industrial Silicone Keys with fluorescence |
| Fast Dial | S1、S2、S3 |
| Power supply | DC 12 V/2A or Switch output: 33-60V |
| 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 |
| Analogue Features | |
| Communication distance | 3km |
| Signal Level Standard Frequency | Low Frequency Group: 697-941 Hz High Frequency Group: 1209-1477 Hz Frequency Deviation: No more than ±1.5% Level Difference Between Low and High Frequency Signals: 2 ± 1 dB Total Distortion Due to Harmonic Intermodulation: At least 20 dB lower than the basic level |
| Wiring Method | Twisted pair telephone line |

Maritime

Highway / Tunnel

Railway

Power - Station

Mining industry

Industrial park
| Package | |
| Unit size | 334*254*115(mm) |
| Packaging materials | corrugated box, pearl cotton lining |
| Weight | Net weight : about 5 KG / Gross Weight :6 KG |