Digital Temperature Controller Build in Outlet 1650W 110V 15A Over Current Protection Thermostat Controller Heating Cooling -22~572℉ for Reptile Freezer Greenhouse Temperature Control, WH-1803B

I have a 1500watt electric fireplace. If I set the fireplace to 72 or 75 it gets stuck on and I'll wake up to it being 80 and it still blowing heat out. So was setting it at 70 but that's too cold for this room, for my reasons. I couldn't find a replacement thermostat for it like I have other heaters in the past. So I had a look for an in line option and found the thermostat plugs. I looked at the cheaper all in one box units and they all had reviews where they melted. I didn't want to create a fire hazard so I kept looking and found this. There are more expensive options but this was listed at over 1600w so I knew it would handle my 1500w heater. Having the temperature probe on a line is nice since I could place it at a higher spot away from the plug and heater to get a more accurate read on the general room temp. The peace of mind that it most likely wont cause a fire and will keep comfortable is worth the money to me so great value. I do hope it lasts a few years before getting wacky, like the heater thermostats. So far in my experience electric heater thermostats last about a year. Maybe this will last better since the probe can be kept clean and dust wont make it's way into the sealed box. I think others may fail due to dust and pet fur getting into the components. Took me a bit to figure out how to set it right but it's working great. I set it to turn on at 73 and turn off at 75 and it's felt a nice even temperature the whole time, day and night. I no longer have to choose between freezing or baking. I would have liked a remote like I have for the heater it's self but it's not really needed since I've not felt the need to be adjusting it any more. I didn't rate accuracy because I'm not sure. My digital thermometer in the room reads different temperature, and an analog thermometer I put in the room briefly read somewhere in between the 2 of them. So I'm not sure. Maybe use an analog thermometer if you need a more precise temperature to check that and then set it accordingly. But it's accurate enough to keep the room in a nice temperature range.

I picked up a small 1400w Masterbuilt smoker at a yard sale for ten bucks. Still new in the box so could not pass it up. I have the big digital Masterbuilt w bluetooth I love it. But when it comes to smoking herbs, ginger and so on, it's a bit big. So I figured the little smoker would be the ticket. Unfortunately the plug-in analog temperature controller is completely inaccurate in the temperature swings a whopping 60°. That is unacceptable for smoking stuff and you would ruin whatever is in there. So I got this digital temperature controller. I removed the analog thermometer off of the front of the small smoker so I can insert the temperature probe of this controller. I like everything about this digital temperature controller. I have yet to find any faults or or shortcomings with it allbeit pricey. I can put my stuff in the smoker go watch football and hockey and not have to constantly get up and down to go check the temperature, I love it. The "A" version of this temperature controller won't work for a smoker you'll have to get the "B" version because of the temperature range is suited for smoking. Also please pay attention to the wattage of your smoker or whatever you are plugging into the controller! Anyhow so far so good I hope this helps someone. Smoke on!

So I bought a typical cheap electric smoker non digital model smoker. The one I bought uses a standard bi-metilic thermometer that controls the heat element much like an standard oven only cheaper. This set up is extremely unreliable if you are trying to maintain a heat range for smoking over a long period of time, say something like brisket. So I did my research and needed a digital temperature controller that had a range from 0 to 300 degree plus. I found that the WH-1803B did just that so I purchased it. When you install it make sure you open the controller that comes with your smoker all the way open and allow the digital controller to control the heating element. When you program the controller I discovered that it allows about a 10 degree range from the target you want to maintain, 10 degrees hotter and 10 degrees cooler giving a total range of 20 degrees. So I programed as follows: My target is 225 degrees - Start programed at 220 and stop programmed at 221 degrees. It will turn off at 221 degrees and as the element cools the temperature will rise to about 230ish and then begins to drop. As it drops the controller will turn on at 220 degrees. It takes time for the element to heat so the temperature will drop to around 210ish and then the temperature begins to rise. It sound bad on paper but it works quite nicely. You have to keep in mind two things for this application. One is with a non digital heating element it is either on or off. So the larger the element the hotter it gets when switched on. This is because the element is switched on wide open. And once switched it off it takes time to cool off and the same holds true once switch back on, it takes time for the element to heat back up. So you have a heat range of about 20 or so degrees it wonders through. It's not the digital control causing this its the actual heating element. And second without a slow start programed this is acting as a on and off switch subject to the characteristics of the heating element. The second thing that effects how it works is how well insulated the smoker is itself. The better insulated the longer it will retain the heat which slows the controllers cycling. This controller does offer some advance programming features that would allow the user to better control how it works and operates. But that would require effort on my part, which probably isn't going to happen with this application. However, for someone who understands that stuff and would like to tinker with it, it's there. Yes I would recommend this for the non professional applications. It would probably work for professional applications its just that I don't know what Im doing half the time and the other half my wife is giving instructions.....At any rate you're not going to go wrong if you need a simple digital controller with some advance programming at a reasonable price.

I bought this for more even temperature control for my electric smoker. It was very easy to set up and use with the included instructions (which are in very fine print). It has a quiet audible click when the power switches on and off; it is nice to have an audible sign that it is working. In order to reduce rapid switching on and off I set an upper and lower temperature 10 degrees (F) above and below my target temp and it powers on when hitting the low trigger number and turns off when hitting the high trigger number. I drilled a small hole in the upper back of my smoker cabinet and tightly wrapped the temp probe a couple times in aluminum foil, then inserted it into the newly drilled hole. Inside the cabinet I then threaded a nut over the probe and the nut threaded itself onto the aluminum foil wrap to hold the probe tightly it in place so it will not slip out of the back of the smoker. On the outside of the smoker I then used a knife and gently flared the remaining foil over the back of the probe to keep it from slipping into the cabinet (see picture). It provides continuous even heat and you can set the range where you want with as much variability in temperature as you choose to allow. This is an excellent product that works as advertised. I highly recommend it for use with an electric smoker.

Works as described and has a nice digital screen that shows current temp while in use. I took 1 star off because the instructions are very basic and don't do a good job explaining how to make the settings. I had to push buttons for 10 min until I figured it out. Also it only has a hanging type mount, I would have preferred screw holes so that I could screw it down.

Well built device and excellent customer service. Company responded and resolved issue in less than 24 hours. Update: device failed in April 2023. Controller works properly, but it will not switch the power to the smoker on and off. Reset button had no effect.

I bought this unit to convert my analog electric smoker to digital control. The analog controller on my electric smoker took a lot of attention to keep it even close to the right temperature. It would be affected by the heat from the smoker pellets and food temperature. By adding the WILLHI WH-1803, I can control the temperature in a close range and trust that it will be at the temperature I set it to. The temperature setting is easy. If I want 225 degrees, I set the on temperature to 224 degrees and the off temperature to 226 degrees. The unit turned on and off exactly as programmed. The smoker would overshoot these temperatures on the low and high side because of the thermal delay of the heating element and the mass of the food and the unit. After a little bit of time cooking the overshoot lessened. Still the WH-1803b did it's job and controlled the cooking temperatures. The main thing for me is the fact that I no longer need to constantly be checking on the temperature of the unit. This leaves me free to make sure the pellets are smoking and there is water in the water tray. and of course the paying attention to the cooking of the meat. I bought the WH-1803b. Both the 1803a and b will handle the power for the smoker at 1500W. But the 1803b unit would go up to 572 degrees vs 230 degrees for the 1803a. I don't cook at that high a temperature often but I do cook at 250 degrees or 275 degrees which the 1803a won't deliver. I recommend this unit.

I use mine for smoker control, which isn't a critical application, which is good because of the wide swings in temperature. The setup is tedious. Unlike traditional PID controllers, you have to set an upper and lower range, not just set a single number. The range you have to pick may not be intuitive, based on your cooker and ambient temperature. Most PID controllers let you set a target temperature (and maybe a swing parameter) and the controller will figure out your cooker characteristics automatically. This allows you to set a temperature and walk away as the PID controller learns to manage your unit's heating or cooling characteristics and make adjustments for the environment on its own. Over time, the temperature swing will go down and you will stay closer to your target. This unit makes you set upper and lower targets and makes the user compensate for heating and cooling characteristics of the controlled device. As other reviewers mention, you may need to set a range of numbers BELOW your target to keep a cooker in range. This two number setting is a pain if you want to change the temperature, as I sometimes do, from a cooking range to a warming range. If I didn't live in Mexico and ship via an importer, I would have returned it immediately. Returns are a headache here. This isn't the vendor's fault, it's a sad reality. It would cost almost what the unit cost to return from my location. Since smoker temperature control isn't life or death critical, I have kept this unit in spite if it's tediousness. I set the control to have a one degree range, and it keeps my cooker within +/- 10 degrees of my target. My former PID unit had a single number setting and would keep it within 2-5 degrees of target. The older unit sometimes cycled the heating element on and off frequently, which kept the temperature in range. (This kind of switching wouldn't work with a motor or refrigerator). When this one breaks, I will shop for a true PID controller with a single target number.