Flexcharge NC12L-12 Solar Charge Controller for Lead Acid 12V Batteries  [COY]

I've used this in a small RV with heater and the heater blower could draw more than 12  Amps, so use this with

small fans instead.   

This controller will preserve the health of a lead acid battery by shutting down when too much power is drawn.

That is a nice feature for remote gate operating, irrigation, flashing signs, etc. where you come to the site it is used weekly or so.

The shutdown feature is inconvenient in a daily use RV setting, since it needs a manual reset when that happens.