The CRC 40 is ideal for locations where the cellular signal is weak, such as offices in areas with a lot of interference or in remote locations. To use it, you just insert a SIM Card chip (not included). The device is unblocked¹ and you save with plans from operators of your choice. It has functions such as sending and receiving of SMS², caller identification, and internet access for a computer².
¹ This device operates on the frequencies 850/900/1800/1900 MHz. Verify the frequency of your operator at the installation location. ² Depending on the plan and availability of the operator.