This TF series solar charge controller is the PWM one, which is created by our company and  unique in the market. 
It has LCD screen display, with dual USB connectors at the side. 
Now this model has 30A and 40A two currents, of 12/24V automatic identification. 

Advantages:

√Simple visible LCD display shows live parameters of power system, monitor and check system status.
√ All the controlling parameters can be reset flexibly to satisfy your different needs.
√ 12V 24V auto switch, and automatically break off when the battery is not sufficient to power loads, make sure battery will not drain off.
√Integrated multiple protection against overcharge, over discharge, over load, short circuit and reverse polarity, safely protect your battery.
√ Temperature compensation function, the controller can automatically adjust the charge parameters of battery by environment temperature to prolong the service life of battery.
√ Double USB connector: which can charge cellphone, ipad, etc.