We offer cloud enabled controls for horticultural lighting. You can buy our plug and play controllers directly at growflux.com. Use discount code riu10 for 10% off your first order.
You can also buy our integrated controls from brands like HLG:
Correct - we have seen some lights that only have pins 2 and 3 or pins 4 and 5 wired. This connector follows an informal standard that is not codified in any way, so for us its best to be consistent and wire all 4 positions so our customers don't have compatibility issues.
We make an internet connected dimmer with smartphone / software API support, but we use a more industrial wireless mesh rather than WiFi. It's shipping now to lighting manufacturers and retail distributors - PM us for early access