product description:
Phone users: You can take a management card (13.56M radio frequency card) in your hand. When you use it, you only need to insert the management card in the user's hand into the card slot of the card machine and pick up the microphone.
Just start calling. During the call, the device's LCD screen can display the call time and the amount used. After the call is over, the total duration of the call can be displayed.
Total amount, the remaining amount in the management card.
Recharge management: The user can get the card to the designated recharge point for recharge. The designated recharge point needs to install recharge software on the computer, connect the IC card reading and writing device to the computer, and change 13.56M
The RF card is placed on the IC card reading and writing device and can be recharged by computer software. The recharge is in the sector preset by the customer (the telephone fee for recharge is stored in one of the designated sectors of the IC card).
Set special city codes and unit codes for encryption according to customer requirements. The recharge software is easy to use.
Encryption management: In order to prevent the use of other illegal cards, we set the city code, unit code, and IC card sector number on the phone to set the city with our designated recharge point software
The code, unit code, and IC card sector number must be consistent. Otherwise, it cannot be used normally.
Phone settings: The city code, unit code, and IC card sector number in the phone can be set on the phone through a password method (this setting is set at the factory).
