First time using this 5-pack seed starter kit from Amazon. It has LED lighting and different timing modes. After recording this video, I figured out how to set the timer to 12-hour increments. With 3 mode cycle timer settings – hold for 3/9/12 hours and automatically turn on and off at the same time the next day without having to unplug or reinsert.

https://amzn.to/3n5ccDH
(Amazon Affiliate Link)