The Teleguard Classic Product line includes three models. The T-1110M can transmit full data from any security or fire panel to the central station and communicates all digital formats. The T-1110M can also make or receive calls over cellular using any standard phone device. The T-1210M has all features of the others with the added abiity to automatically switch phones, FAX or modem on the same line as the RJ-31X to cellular if landline communications are interrupted.