About PSTN Applications
About PSTN Applications >> PSTN Function

Telephone network application to the alarm is historically inevitable choice in the development of early warning systems, telephone lines are the best, the most popular communications network.


 About DYGSM   SiteMap   Language
From the foundation in 2008, Shenzhen Daying Electronic Technology Co., Ltd has gathered a professional elite team in security alarm field. Our company has become a high tech enterprise by uniting the technological innovation, ...

Shenzhen Daying Electronic Technology Co., Ltd.
Tel:86-755-28226870/29807680 Fax:86-755-27999189
Website:http://www.dygsm.com E-mail:info@dygsm.com 
  About us
About us Contact us
Products
ALARM SYSTEMS INTRUDER DETECTORS ENVIRONMENTAL DETECTORS FITTING SERVER
Support
Technical exchange Questions and answers Vocation news Application scheme 
  中文