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3G Digital GSM intercom system(Multi-Resident )

3G Digital GSM intercom system(Multi-Resident )
SS1603-12-MULTI

3G Digital GSM intercom system(Multi-Resident ) designed a group of keypads. Use the keypad to press the account number to dial to the specified user. It is the way to use the 3G network. It can also control the door entrance. You can also use the keypad to enter the password to unlock.