Hydrofarm FBA_CATMP-DNE Day/Night Cooling & Heating Thermostat, Day & Night Controller

This unit does exactly what they say it will do and seems pretty reliable.I do agree with other reviewers about the knobs, themselves. They need to be using Rotary switches...the kind that have a gentle "click" at each setting. The knobs they use are much too easy to accidentally turn, and they are not as precise as I'd like. For example, you have to guess if you are at 92f or 93f (somewhere in between 90 and 95)UPDATE (a few days later):I am returning this item because it is defective, though I will probably give it another shot.Tonight, the temperature in my environment reached the threshold and the unit shut off as expected...however...it continued to try restarting 10 seconds after it shut off, but of course, the temperature was still the same(too high), so it would shut off again...etc...etc...etc...I noticed it after it had been happening for a few hours, so no telling how much damage my lights suffered as a result.

I purchased through this particular vendor because they are CAP authorized, and the picture of the unit has CAP branding.I was hoping for a CAP branded cycle timer.- Turns out Hydrofarm has purchased CAP. The unit you receive has no CAP branding. Hopefully, this timer is just as reliable as CAP branded.This vendor shipped me the unit in a soft bag, with zero padding. While the bag looks beat up, there is no rattling in the unit. Pray for the best!I am hopeful that the unit works hell, but the dials are free moving (no click positioning) and getting to the wanted number is very much trial and error.For $80, I don't have many other options, but I was expecting a bit better. At this point, this review is more about the vendor than the product.

Pricy, but reliable and necessary for running pumps on a consistent cycle.. Put it somewhere where you are least likely to bump the very easy to turn knobs

Works like advertised. With the temp set, you will have to monitor at first so everything can be tweaked to desired position and temp ranges. Read instructions so you understand setting functions! So far I am happy with the product after set up, only time will tell if it's reliable.

I have now purchased a total of three of these timers and they have all failed miserably. Every last one. We have lost considerable $$ on failed crops due to this timer. Buyer beware. The first one worked for about a week and then did a continuous on-time running and flooded my grow area. After resetting, it worked for less than one day before having the same problem. The second timer was broken out of the box. The third has never turned on unless I do it manually. So basically broken out of the box. The extra money for this timer just makes you feel more stupid for buying the more expensive timer.

I think this is a good product but I had to return it. It will not work if you have a rheostat attached to your equipment that limits the speed. It just clicks on and off and won't work. If that wasn't a problem I would have definitely kept this item. Most people would have a rheostat between this and their other equipment so I think this is a good purchase for most, just not for me.

Very precise. Worked for daily use in an indoor garden. My first burned out after about 3 years of running a 12amp AC unit. Highly recommend

This temperature works exactly how you expect it to work. Easy temperature selection via clearly labeled knobs. Temperature selection is accurate within a couple of degrees. Works so well that I have purchased more than one unit.

This a fantastic product for those who want to protect their investment. Having a high temp limit adds piece of mind knowing that this will protect your crops and equipment. Temperature is in Fahrenheit.