This video takes you through 5 top automation ideas for a motion and human presence sensor in the eWeLink app: controlling lights with a motion sensor, enabling heating if the window is open, notification for for movement.

Original zigbee motion sensor: https://itead.cc/product/sonoff-snzb-...
New zigbee motion sensor: https://itead.cc/product/sonoff-zigbe...
Human presence sensor: https://itead.cc/product/sonoff-zigbe...
CH4 Pro: https://itead.cc/product/sonoff-4ch-r...
NSPanel Pro: https://itead.cc/product/sonoff-nspan...

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Chapters:
0:00 Intro
0:14 The setup
1:38 Motion activated light
7:24 Turn lights on with auto off
9:35 Presence sensor
11:14 Motion activated doorbell
14:26 Presence based heating
19:03 Motion alarm
24:14 Outro