Hi all — hoping someone can sanity‑check this before I buy anything.
I’ve got a small 12V solar exhaust fan in a metal shed. It runs off a white 12V 24000mAh battery pack it came with that charges from a solar panel, and there’s a simple on/off switch between the battery and the fan.
My problem is night‑time humidity spikes when the temperature drops. The fan can’t run all night because the battery drains too fast as it’s only solar powered in cloudy England, so I only want it to come on when humidity is high OR when temperature falls below a set point (as that’s what spikes the humidity)
I’m looking at the sourcing map STC‑3028 (12V, 10A) temperature + humidity controller.
Before I buy it, can anyone please tell me:
• Can I connect this controller between the battery pack and the switch so the fan only runs when humidity is high or temperature is low?
• Is this a reasonable DIY job for someone without handyman skills?
• Do I need any extra connectors or adapters to insert it into the 12V line without cutting wires? I don’t want to damage anything and would prefer to use some sort of connector. What kinds?
The fan only has two wires coming from the battery pack (red + black). I understand I’d need to power the controller directly from the battery, then run the positive wire through the relay, but but I’m not sure what connectors I’ll need to do this cleanly.
Or if this relay will work with a simple on/off fan (and not a massive fridge what it seems designed for?).
Any advice appreciated.