This is the SEMPER generic blue PWM Solar Controller kw1210 10ampere, one of the cheapest solar controller you can get, it pretty much looks like other solar controller out there, except this has a flimsy button and plastic body/panel and there is no heat sink in the back unlike others, just a metal back plate that gets really hot during its peak voltage.
I just stick an old heat sink in the back and heat dissipates properly, I used to remove and keep heat sinks and fan of defective video card and motherboard before I dispose them for this purposes.
It's surprising its circuit is simple, it does not have much bells and whistle inside unlike the other solar controller I got. But don't make it fool you, this controller just works and is consistent. Its a good entry level controller, for those who wants to enter and play with solar power, better get these cheap controller, it's better to play actual real world data than just reading on those papers.
It also has a LCD(no backlight) control console which you can see the system/battery voltage and other like adjusting float charge voltage, discharge stop/start. You can also select lead acid battery type, such as sealed, gel and flooded. Obviously its not as efficient as more expensive controller like MPPT but this controller just works.
You can watch a video here how it behaves if you are interested.
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