The CALEFFI CODE^® system can also be managed without internet connection. In these cases, the ideal solution is Gateway PRO (always available in two versions: white code 215015 and black code 215015 BLK) with built-in GSM, UMTS or LTE modem.
By simply using a 4G micro-SIM card, you can also manage systems without landline, such as in second homes or holiday homes.