Single Stage 5-2 Programmable HVAC Thermostat with Easy to Read Display,1 Heat 1 Cool,Saswell T21STK-2 White

When I moved into my apartment three years ago, I had the hardest time getting the temperature to set where I needed it because it was the dial gage. I asked the apartment manager if I could change it to a different one, and she said that it would be okay and all I had to do was to put in a work order and maintenance would put it in. After, it can in and maintenance put it in, I loved it. I can set the temperature to my comfort and not worry if it is working or not.

I noticed something weird setting up the day schedules in that I couldn't set both Mon-Fri to start at 12am, and again on Sat-Sun. I could set Mon-Fri that way, but Saturday the earliest I could set was 6am. You'll have to start both schedules at no earlier than 6am or have a minimum gap of 6hrs 15min between schedules from weekday to weekend..... where the assumption is it will keep the previous schedule until the first run time 6am+, though I hadn't yet verified. Very odd since my 20 year old digital thermostat will set both schedules at 12am no problem.The Amazon advert showed a red logo on the front of the device, but when I received it the logo is gray, and much less noticeable.

The unit was very easy to install, even came with mounting screws and anchors. While one of the buttons in programming is not intuitive, it is explained well in the manual. Once you know this, it is very easy to program. The time zones are well labeled - it prompts you for a temp and time for awakening, for after you leave, for returning home and for sleep. If, like me, you don't leave the house much on the weekends, you can just set the two daytime ones to the same temperature. It has an option for shorter or longer cycle times. I am pretty sure it defaults to short. Getting up to a room that is not freezing in the morning is worth the price! Not to mention the savings by lowering the temp at night and when you aren't there.

Arrived an hour early and in one day. Set it up and working in 10 mins. Easy to program. Some people are saying they need their glasses to read and that the blue backlight makes it hard to see. I use readers (56 yrs old) all day long but I do not need them to change the settings on this unit. I included pics here. The readout is actually crisp and clean, I just got my phone too close so it looks a little out of focus. I would def buy again.Note: I read that people had a problem with it cycling off after a minute or so, but once I got it programmed and un pulgged it from the wall and plugged it back in one time, that fixed itself

Room temp is WAY off and takes a very long time to adjust anyway. It's 25 degrees here is Pennsylvania right now and it took an hour to go from 66 to 53 then I gave up. Ruins the precise 1 degree advantage over the older THERMOSTATS that are usually +3/-3 degrees. Of course, a quick, accurate room temp is mandatory. I bought a thermometer on Amazon that takes temperature in one second. Why don't these digital THERMOSTATS have that kind of accuracy? When talking about 69° vs 67°, the room temp has to be quick and right on. As a result, my furnace kicked on and off several times a MINUTE (called a cycle). USUALLY, according to Google, 5 to 6 CYCLES an HOUR is normal. I counted 4 times a minute more than once before I removed it. Furnaces can't take this many "clicks" on and off. Risk of being the furnace, or worse, a fire. There IS a setting on the system to set to Fast cycling or SLOW.. But they don't say what it means. Every other THERMOSTAT can be set to a number of cycles (even the analog plastic or mercury ones). Manual days off neither fast nor slow fits, call an electrician. Ok, that's $150. Just be careful if you have the old school, 2 wire hones with the big furnaces. The combination of fast cycle setting and the incorrect room temp spells bad news. Out of the box, most are set to 5 or 6 cycles per HOUR. Not this one,or it is the bad/slow/inaccurate room thermometer- Or a combo of both. Go with another one if you have older wiring (one white, one red). This is what it looks like on the inside (see pic). It comes pre-installled with the red jumper wire from red heat to red cold ("?" shows pre-approval installed jumper). It's really for new climate control Central air systems. What # of cycles per hour is FAST vs. SLOW? No idea. Lots of guesswork that can cause damage to your heating system. The 1970s

Cons:- There are 3 settings for backlight... off, on for 30 seconds, constantly on (if you have a C wire). I set the unit to 30 seconds, but it only stays on for about 5 seconds.- You cant activate the backlight without changing a setting. To activate the backlight you have to hit one of the temperature arrows. When you do that, it changes the temp... at least if you are in 'hold' mode..- The viewing angle is limited when backlight is on. If you are setting in a chair and looking up at it, you can't see the numbers at all.Pros- I put a dedicated temperature gauge near it, and it seemed to be pretty accurate.- it shows the set temp and current temp always... a lot of units only show the current temp always.- no problems working- can choose between fast and slow cycle, and also set a compressor delay from 1-5 minutes, to help keep it from short cycling. manual says fast cycle is +/- .5F and slow cycle is +/- 1.5F- not expensive3 stars. I was going to return it because of the 5 second backlight issue, and not being able to activate the backlight without changing a setting. I ended up putting it in a rental that had a C wire, so that the backlight stays on all the time.

Easy install and very good product for the cost. Still running it with no issues. I'm happy with it and it looks good to. It might be cheap compared to other thermostats but it don't look like it's cheap.