Topen Electronics Technology Limited is the first and professional manufacturer of GSM car alarm system in China. 



The main uses of our GSM car alarms are anti-burglar, anti-hijacking and anti-destroying. The GSM system will send out voice signal directly to your telephone or mobile phone in case of burglar, hijacking or destroying. It always enables you to keep in touch with your car at any time and any where.



Topten GSM car alarms are your best choice for to protect your car.