SS91BV-M GSM Intercom is a door station  but it does not need communication with another home station, as it rings your landline or mobile phone . It is a new entrance intercom system working on the GSM network. You can answer the door and talk with the visitor from any location when someone visits, and SS91BV-M also provides the access control feature for 1152 users.

This Intercom requires a Vodafone or 2 Degree's Sim Card. It will not work on the Telecom Network

GSM Intercom Spec's (95k)

GSM Intercom with Keypad (1.189MB)

GSM Keypad (1.576MB)