Well on another thread for coop doors https://www.backyardchickens.com/threads/my-auto-door-solar-setup-for-multiple-coops.1207442/page-3#post-19189026 the OP and @aart found a timer!!!
https://www.amazon.com/1006692-American-Hunter-Digital-Timer/dp/B000FGTPWI
The 3 coops are 100 to 200' away from the nearest electrical and no wifi...I don't like tripping over a cord or in the winter plowing it up LOL
This is a light inside the coop to keep them laying in the winter.
I had something similar and it didn't seem to help laying. Maybe your is a better...
I seen a solar light for coops and wondered if anyone has it? It is $100 + $18 shipping to me.
http://www.henlight.com/ordernow/backyarder
Henlight Plug-In System
Our newest product, The Backyarder, a the same great quality you expect from Henlight, but instead of solar and battery powered...