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Does the device work for on & off in manual mode? Are you leaving the room while testing the automatic mode?
If it doesn't manually turn off there is a wiring problem or the device is defective. Are you using it as a single-pole switch - controlling the light from only one location?
Hopefully, how is it wired? A picture would be good
I do not see colors mentioned in the installation instructions for the LED. They only say it is On, Off or Blinking.
Yellow is not used in single-pole mode isolate it and cap it off with a wire nut. Black (hot) should go to black on the switch. Red goes to load which should be black but not hot.
OK, thanks, let me know when you are done. It should work in manual & automatic after the rewire. Thank you
Please send a picture, there is a wiring problem. Thank you
Appears to be correct if the black on the switch is connected to the hot wire. Have you tested/verified that is the hot wire with a voltmeter? If so, the device must be defective.
Any luck with the replacement or do you have to order it?