
The JR103-CB-4G Auto-dial Emergency Telephone is a robust communication device designed for reliable and fast emergency response. Built with industrial-grade materials, it ensures stable performance in demanding environments and supports seamless 4G connectivity for clear and instant voice communication.
Equipped with an auto-dial function, the system allows users to connect directly to preset emergency contacts with handset pick-up, improving response efficiency in critical situations. Its weather-resistant housing and high durability design ensure long-term operation with minimal maintenance requirements.
The JR103-CB-4G Auto-dial Emergency Telephone is widely used in metro systems, train stations, railway platforms, underground tunnels, and public transportation infrastructure, providing reliable communication for passengers and operators in critical transit environments.
Die-cast aluminum alloy body with IP66/IP67 rating, IK10 impact resistance, and corrosion-resistant hardware, withstanding -40°C~75°C, dust, moisture and harsh conditions.
Advanced noise reduction filters out ambient noise, ensuring clear on-site and dispatch communication.
Fulfills on-site emergency communication and dispatching requirements across diverse operation scenarios.

Supports integration with external audible and visual alarm beacons for clear call alerts in noisy environments.

| 4G Specifications | |
| Power supply | 12V DC |
| Adapter input | 7.4 V-12V DC |
| Power consumption | Idle 0.3W / Working 1.5W |
| Communication mode | 4G |
| Working frequency | Depends on modules |
| Ringing tone | 90 dB (A) @ 1 meter |
| Configuration method | Remote configuration via SMS, allows management from a central location |
| Configuration | Remote monitoring / Auto-dial numbers |
| Time out | Enforces a fixed call maximum time limit of 6-8 minutes from off-hook, configurably |
| Diagnostic function | Low battery voltage, weak signal, speaker volume, microphone volume can be reported via message |
| Antenna | Quad-band SMA male, externally mounted with 2 m cable |
| Environment temperature | Operating temperature -40˚C to 65˚C; Storage temperature -40°C to 75°C |
| M.T.B.F. | Exceeds 50,000 hours under normal operating conditions |
| 4G Module EC25 | |||||
| Module | EC25-E | EC25-EU / EUX | EC25-J | EC25-V | |
| Region | EMEA/Korea/Thailand/India | EMEA/Thailand | Japanese | America Verizon | |
| Frequency | |||||
| LTE-FDD | B1/B3/B5/B7/B8/B20 | B1/B3/B7/B8/B20/B28A | B1/B3/B8/B18/B19/B26 | B4/B13 | |
| LTE-TDD | B38/B40/B41 | B38/B40/B41 | B41 | / | |
| WCDMA | B38/B40/B41 | B1/B8 | B1/B6/B8/B19 | / | |
| GSM/EDGE | B3/B8 | B3/B8 | / | / | |
| GNSS | GPS/GLONASS/BeiDou (Compass)/ Galileo/QZSS (option) |
GPS/GLONASS/BeiDou (Compass)/ Galileo/QZSS (option) |
GPS/GLONASS/BeiDou (Compass)/ Galileo/QZSS (option) |
GPS/GLONASS/BeiDou (Compass)/ Galileo/QZSS (option) |
|
| Module | EC25-A | EC25-AF / AFX / AFXD (Data-only) | EC25-AUX | EC25-MX | |
| Region | North America | North America | Latin America/Australia/New Zealand | Mexico | |
| Frequency | |||||
| LTE-FDD | B2/B4/B12 | B2/B4/B5/B12/B13/B14/B66/B71 | B1/ B2/B3/B4/B5/B7/B8/B28 | B2/B4/B5/B7/B28/B66 | |
| LTE-TDD | / | / | B40 | / | |
| WCDMA | B2/B4/B5 | B2/B4/B5 | B1/B2/B4/B5/B8 | B2/B4/B5 | |
| GSM/EDGE | / | / | B2/B3/B5/B8 | / | |
| GNSS | GPS/GLONASS/BeiDou (Compass)/ Galileo/QZSS (option) |
GPS/GLONASS/BeiDou (Compass)/ Galileo/QZSS (option) |
GPS/GLONASS/BeiDou (Compass)/ Galileo/QZSS (option) |
/ | |


Port

Ship

Highway / Tunnel

Railway

Generating station

Mining industry

Industrial park

Heavy industry

| Package | |
| Unit size | 334*204*105 (mm) |
| Shipping dimensions | 200*300*440 (mm) |
| Packaging materials | Foam padding, carton |
| Weight | Gross weight: 6 kg / Net weight: 5 kg |
We inform you about new solutions, case studies,
cybersecurity and new products.