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The SEM300-PS-AT-M is an update to the previous SEM 210 model. The SEM300-PS-AT-M is an LTE cellular and internet communicator from Alarm.com for the DSC PC1616, PC1832, and PC1864. The SEM300 provides dual-path communication to your system for Alarm.com service plans. Also includes a z-wave hub for automation service packages. This model runs on AT&T signaling.
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