I have a detached garage that has been proving to be problematic to get a reliable connection of ADT sensors to. The garage does have a layer 2 switch and a WAP installed so there is network connectivity
Is there a way to add a second hub to my system and have that second hub share information with the main hub so that when setting the security mode the sensors on the 2nd hub trigger a security alert?
Right now I am using ADT sensors, on a ADT hub, but if a solution requires me to move away from ADT and just use zigbee or zwave sensors that would work as well.
Because you have the ADT model hub, you will not be able to trigger a security alert from a second hub. They have the security features locked down pretty tight on that particular model.
So it just depends on what exactly you need. If you would be OK with other kinds of alerts, like a local siren or lights, there are some options. But nothing that will trigger the ADT features.
There’s a how to article in the community-created wiki on automating an outbuilding that goes through some of the options, but remember none of those can trigger ADT features on the hub in the primary location.
My zwave and zigbee devices connect pretty well in the garage, but I have been pretty careful to set up several outlets in the wall of the house facing the garage.
This leaves me two choices.
I can bag the ADT features and use smarthomemonitor which very recently appeared on my ADT hub (Very cool). The disadvantage with this approach is that my wife really wants ADT service for security and likes the keypad on the hub for arm/disarm. She does not use the app.
I can use a Zigbee or Zwave device, or devices. I can have these trigger a automation that turns on and off a outlet. That outlet can be connected to a plunger type solenoid that physically moves the magnet on a ADT contact sensor.
It is a total hack job but someone on here modified a ADT sensor to attach to a external relay or something like that. You may be able to use a zwave sensor out at your garage to trigger the the relay or whatever attached to the ADT sensor in a reliable place in your home.
I haven’t tried or heard of anyone using the ADT smartthings panel the way described above. It does sound intriguing though.
I think the real question is do you need ADT Monitoring for the garage. If not you should be able to setup some simple notification automations that could take care of your need.
ADT tools can also help if you don’t need monitoring. It has a option to enable non dual branded sensors for simple monitoring based on alarm status.