The telephone can be integrated with a programmable exchange and coupler to form an independent communication system.

2. Directly connects to telecommunications networks.

3. Once the calling system is assembled, each telephone is an independent workstation, and a single failure does not affect the entire system's operation.

4. After forming the call system, the product features automatic gain function, with voice volume remaining consistent regardless of distance or the number of telephones.

5. The internal circuit of the telephone utilizes a general-purpose double-sided integrated circuit, featuring accurate dialing, clear conversation, and stable operation.

6. Carbon steel surface with electrostatic powder coating, high mechanical strength, and strong impact resistance.

7. One-Touch Speed Dial (preset numbers).

8. All key components such as handles, hangers, and keyboards are manufactured in-house by our company, with stringent quality control and quick response to after-sales inquiries.

Suited for environments such as subway systems, tunnels, pipelines, highways, power plants, gas stations, docks, steel mills, etc., with specific requirements for moisture resistance, fire prevention, noise reduction, dustproofing, and frost resistance.

Instructions for Use:

1. Caller picks up the line, presses the button, dials the called party's phone number → the called party's phone rings.

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

3. End the call and hang up the receiver.

Under normal use and no man-made damage, a one-year free warranty is provided.

2. Handles, hooks, and keyboards for our products are all self-manufactured by our company, with service parts available at any time.

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