I have had this unit installed about three months to control charging of a deep cycle battery for my irrigation system. The unit it replaced was a Tracer which did well but went out after two years. My understanding is this company bought Tracers design and added changes. By pushing a button you can scroll through the display and see symbols of the different elements of your installation and their values which is pretty neat. For instance the first item shown is a solar panel and it gives the current voltage coming from it. It gives the current going to the battery, battery voltage etc. This unit is both bigger and heaver that the Tracer with a substantial heat sink. I did not have any trouble with the terminal strip but am not a big fan of that design as it can result in loose connections if not careful when tightening the wires. The working temperature rating goes to 113 degrees f. This seems a little low for here in the south where the ambient temperature can go over 100 degrees f. in the summer. When you put it in a box with other devices the temperature can most likely exceed 113 degrees. I installed an attic fan thermostat and a little dc cooling fan and when set at 95 degrees f. it usually runs until night time when the temperature goes down. The unit only comes with a one year warranty and I recommend buying the optional warranty. So far it is working great and keeps my battery charged.

Still working years later. No problems. Actually very good quality. I'm an electronic engineer and would recommend this controller.

lots of option for time setups and also one for an off on switch setup which is what I use

Well it's been 2 years running 750 watts through this charge controller and not one problem. During day light hours i can run a flat screen with a sound bar and a ps4 plus charge two phones run Wi-Fi and as long as i fully charge before using the ps4 my batteries will stay full.

This appears to be the same china no name Tracers with a Renogy logo on it.
I gave this unit 4 stars due to the missing screws on the pcb (only 1 of 4 had the screws in it), the sever lack of serviceability on the 3 fuses, and capacitors, and the incredibly bad thought they did by potting the capacitors. This is the worse thing I have seen done! If there is a failure, the top can not vent through the safety release, and the walls can not expand. If it gets to rupture pressure, it will explode and destroy the board!! This is not from Renogy, this was done by the manufacture. If you use this correctly and had good batch of capacitors this should not be an issue. PWM does stress capacitors. I was not able to get ratings off of them to see if they oversize them to compensate for this.

Other than those issues.. I do like this unit. The surface area for cooling looks very well. Inspection of the surface mount components looks to be of good quality. I did not find any cracked or still having the beads in the joints. The board has a nice even conformal coating which will make this board have much longer lifespan. The transistors have full electrical isolation from the shell, very nice touch. The mounts on them are isolated as well and have a locking material on the heads to prevent them from backing out.

Another thing I really like was the negative buss bar to all 3 ground terminals. It is very thick and tall. This bar will handle 40 amps with no problem all day long. This also allows me to use any ground point at any time. In the pictures it appears if the wire was to tall it would short positive to negative, this is not the case.. With the case on, it has a built in plastic bar that goes right down to the board to prevent this from happening.

The MPPT is very fast and precise on this unit. Having 2 c.c. power supplies I watched it hunt. It was very fast in finding the max current and voltage. It also kept searching after locked. The search was very small deviations and did not affect its performance. When a 3rd c.c. power source was attached it found the MPPT point and locked quick and kept searching. This units MPPT is the fastest and most accurate I have seen. The small deviations for search after lock appears to be +/- .3V - */-.25A

I did get the head unit for this, so I can not advise on how hard it is to program though the case buttons.

Remember... This is 40 amps max not a 1000 watt max, with 12 volt system it is good for 500 watts, with 24 its 1000 watts. The manual recommends 800 watts max solar though.