Home Alarm System King Pigeon Hi-Tech.Co.,Ltd., the biggest GSM Alarm supplier, including GSM Home alarm, GSM Car alarm, GSM GPS Vihecle car alarm systems. The S3523 is a new safety solution for home and office and industry and soon. It integrates with GSM network technology, SMS Control technology,voice technology, wireless communication technology, and intellectualized technologies. Apply to widely range applications. King Pigeon Hi-Tech.Co.,Ltd., the biggest GSM Alarm CE Approved OEM supplier, including GSM Home alarm, GSM Car alarm, GSM GPS Vihecle car alarm systems,support SMS Commands. At present,most of our managers are technical and marketing experts including 60 software and hardware engineers,most of them are major in wireless telecommunication or many years experienced in RF designing .Meanwhile,we cooperate with many high technology partners and institutes, as well as many professional Universities all the time.