waterproof landline phone

customized best industrial telephone factory

2022-10-25

  Weatherproof Emergency Telephone The weatherproof telephone used a metal weatherproof shell to minimize environmental damage to the equipment. The...

What does a fire engine telephone do and why should you choose it?

2022-10-21

Fire truck phones are an important tool for firefighters. It allows them to communicate with the command center and other...

The difference between SIP protocol and H.323 protocol in VOIP

2022-10-17

In IP telephone, H.323 and SIP are both used as application layer control protocol for multimedia communication. SIP：Is a text-based...

SIP Visual Emergency Telephone

2022-07-21

SIP Visual Emergency Telephone is specially used for outdoor emergency telephone, pick the machine can automatically call the emergency phone...

mining outdoor industrial telephone

2022-06-16

The outdoor industrial telephone has a standard analog phone, phone line powered. There are also SIP/VoIP, GSM/3G versions, and aluminum...

Wind Power Station Emergency Telephone Radio System

2022-06-15

The wind power station usually installed in remote places, perilous natural conditions and large temperature difference. When the equipment broke...

Certificate

2022-05-30

Can I get sample before order in bulk?

2022-05-27

Yes, we can offer sample for you to check.

Certification

2022-05-26