The new SimCom A7600E modem is pin to pin compatible and working well in the gateway, so far no software changes needed. Supporting both 2G and 4G/LTE. One benefit is that it comes up and also shuts down faster then 7600E or G.
2G:
4G/LTE:
OHS is open source based burglar alarm and automation platform. It can work as new alarm gateway, or it can replace your old alarm panel. OHS can use any wired 12V sensor, PIR, smoke or reed switch. It has Web interface that is used to set it up. OHS has GSM modem that is able to send SMS or page you. It has radio interface for environmental sensors. OHS is self-contained, it does not need any cloud service, only optional SMTP server for emails, or MQTT server to publish collected sensor data.
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