GSM alarms--radio backup network fire & burglar alarm systems, home/office security equipment

Feb. 8, 2012 - PRLog -- GSM alarms is radio backup of telephone network alarms.  With GSM and PSTN double network, alarm system will be more reliable. Generally, GSM runs at quad band of 850/900/1800/1900MHz for worldwide countries.
Generally, the GSM module can be built-in with PSTN alarm panel or add it outside the panel. And you just need to insert the SIM card to have it run. GSM antenna will be included as well.
For different GSM operation company in different countries, the GSM alarm panel should be tested firstly before usage.
Anyway GSM alarm is not the newest technology of security alarm technology. Integrated security systems requires more updated technology such as GPRS, Ip network etc. to have home /office burglar & fire alarm panel, security camera, PIR sensor, smoke sensor, outdoor surveillance equipment, infrared beams and PC, monitor etc. integrated security work together.
For home and small business, GSM & PSTn alarm will be the suitable selection for property, families, house protection.
China Vedard Security provide GSM & PSTN alarms with wholesaler price at  home security online store at http://www.aliexpress.com/fm-store/508818/all-wholesale-p...

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Vedard Security is China alarm supplier of professional security equipment. China wholesaler & retailer of security systems, fire & burglar alarms, alarm panel, PIR detector, motion sensor, smoke sensor, long distance farm protection, door & window protection, glass break sensor etc.
GSM & PSTN network alarm system can prevent fire and burglary and saving life.
http://www.vedard.com is the company site and http://www.aliexpress.com/fm-store/508818/all-wholesale-products.html is the online store.