We have heard concerns about certain users experiencing issues adding products to their carts or having problems during checkout. If you have any issues, please email support@blumats.com, text (207) 837-9438 or call (303) 998 1323. We apologize for any inconvinience this may cause. - Damian with the Sustainable Village family

These products give you the ability to connect multiple sensors to one main port (input), great for being able to move plants between rooms easily.