1. The telephone can form an independent communication system with a programmed exchange.

2. Directly connects to telecommunication networks.

3. With a display screen, it shows incoming and outgoing call numbers, call duration, etc.

4. After the communication system is assembled, each telephone is an independent workstation, and a failure in one does not affect the operation of the entire system.

5. After forming the call system, the product features automatic gain, ensuring the volume of the voice does not vary with distance or the number of telephones.

6. The internal circuit of the telephone uses a DSPG digital chip, offering advantages such as accurate dialing, clear conversation, and stable operation.

7. Carbon steel surface with electrostatic powder coating, offering high mechanical strength and excellent impact resistance.

8. Key components such as handles, hangers, and keyboards are all manufactured in-house, with stringent quality control and rapid after-sales response times.

Suited for use in environments such as subways, tunnels, pipelines, highways, power plants, gas stations, docks, steel mills, etc., where there are special requirements for moisture-proof, fire-retardant, noise-resistant, dust-proof, and frost-proof.

Usage Instructions:

1. Caller picks up, presses button, dials recipient's phone number → Recipient's phone rings

2. Party called hears ringtone → Presses button to answer the call, both parties engage in a normal conversation

3. End the call and hang up the receiver to go on hold

Under normal use and without any artificial damage, a free one-year warranty is provided.

2. Our handles, hooks, and keyboards are all self-manufactured, and we provide sales and service accessories at any time.

3. Unified Customer Service Hotline: 400-118-2011