GSM Communicator Alarm

We are offering gsm communicator alarm.
The k5 gsm communicator is special for converting the pstn ademco contact id control panel to sms alert and sia ip over gprs network.
the k5 gsm communicator inbuilt 85090018001900mhz gsm gprs module inside,cmda2000 and wcdma 3g module is optional for worldwide users.
feature:
--support three alternative communication modes: gprs,sms and pstn;
-- compatible with control panels from any manufacturer which has pstn telephone communicator and ademco contact id protocol;
-- plug and play design, easy to use;
when pstn telephone line disconnect, automatically convert ademco contact id codes to sia ip protocol and transfer via gprs to cms;
-- supports transfer data by both of pstn or gprs;
-- messages are transmitted in sia ip protocol via gprs to the main or backup ip addresses or dns server.
-- if grps connection is lost, will alert by sms;
-- alarm, event, trouble messages are sent by sms messages to up to 5users;
-- access to configuration is secured with password;
-- quick and easy configuration and upgrade firmware via usb;
-- remote configuration, control from cms or sms;
-- backup rechargeable battery, while external power lost will alert by sms;
-- metal casing for additional main board protection.