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VT920 / GSM modem (legacy)
VT920 / GSM modem (legacy)
Connection diagram
All monitoring units, VT8101, VT8101T, VT8110, VT800, VT808, and VT1908 have the possibility to install a GSM modem. The device is mounted and connected to the master unit. Needed when the network is absent or for reservation of a connection channel of the master unit with the Internet; for sending SMS notifications and SMS commands.