GSM Access Control
GSM Access Control is rugged and assembled with an aluminum case. The product is small and easy to install. It uses the GSM network.
3G GSM Access Control
3G GSM Access Control main function: You can call to open the door ( Access Control will Close the call to avoid the cost of). Access Control can receive SMS to open the door. It can control two door locks
3G Digital GSM Access Control
3G Digital GSM Access Control mainly uses the 3G network. The main function can use keypad to enter the password to open the door. Different password can open different door locks, can control a total of two locks.