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TP-Link MS100 Motion Sensor (Zigbee Protocol) + Free Shipping $8.99
BH #TPMS100 • MFR #MS100
From B&H: "Limited supply at this price"
Smart Motion Sensor
Zigbee Protocol Connectivity
Two AA Batteries Included
Up to 2-Year Battery Life
It says it requires a TP-Link SR20 Router...
I bought one and will try to connect it with my SmartThings hub when it comes in.