SmartThings v2 vs v3: Comparing Hubs, Sensors, & More
SmartThings Hub (Second Generation) review: Streamline your connected home with SmartThings 2.0 - CNET
Amazon.com: Zwave Door Sensor Aeotec Recessed Door Sensor 7, Z-Wave Plus Enabled Smart Door Sensor Battery Powered, SmartStart S2, Zwave Hub Required SmartThings Fibaro Home Centre 3 Hubitat : Tools & Home