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This thermostat plug has temperature control function and timing function. It is widely used for aquarium, reptile, incubator, terrarium, freezer, refrigerator, heater, fridge, homebrew, vivarium, fermentation, pet breeding, heat mat, industrial equipment and other temperature-controlled system.
Features:
- Heating/cooling mode
- Cycle timing and Countdown
- Temperature calibration
- Memory function: all current settings will be saved after power off.
- Reset
Specification:
- Power Supply: AC 120V±15% 60Hz
- Temperature control range: -40~248℉ (-40℃~120℃)
- Control accuracy: ±1%
- Sensor: NTC10K/B3950
- Output: Max 15A/120V (The relay is max 15A. Please use resistance load less than 15A, inductive load less than 2A.)
- Timing accuracy: MAX 10minutes
Temperature control mode
Set start temperature and stop temperature, when start temperature > stop temperature, the thermostat outlet will work in cooling mode, and when start temperature < stop temperature, it will work in heating mode. Temperature control range: -40~248℉ (-40℃~120℃), ℃/℉ convertible.
For example, set start temperature=30℉, stop temperature=35℉, heater will start to heat when measured temperature<30℉, and will stop heating when measured temperature≥35℉. And until the measured temperature drops under 30℉again, KT3100 will work again.
Timing function
F01-Cycle timer mode
The device works during ON time and stop working during OFF time. It will keep working in cycles. For example, set ON=0:05, OFF=0:02, this device will work for 5 minutes and stop working for 2 minutes, and then work again in cycles.
Please note: After setting, press and hold "MODE" for 3 seconds to start the programme.
F02-countdown ON mode
The device starts to work after CD ON time ends. For example, set CD ON=0:05, the device starts to work after 5 minutes.
Please note: After setting, press and hold "MODE" for 3 seconds to start the programme.
F03-countdown OFF mode
The device stop working after CD OFF time ends. For example, set CD OFF=0:05, the device works for 5 minutes and stop working forever after 5 minutes.
Please note: After setting, press and hold "MODE" for 3 seconds to start the programme.
F04-countdown ON/OFF mode
The device starts to work after CD ON time ends and stop working after CD OFF time ends. For example, set CD ON=0:02, CD OFF=0:05, the device will start to work after 2 minutes, then work for 5 minutes and stop working forever.
Please note: After setting, press and hold "MODE" for 3 seconds to start the programme.
Widely used for aquarium, reptile, incubator, terrarium, freezer, refrigerator, heater, fridge, homebrew, vivarium, fermentation, heat mat, and other temperature-controlled system.
Greenhouse
Reptile
Fermentation
Incubator
D Tran
2025-08-09 18:42:45
I use this with a space heater to control the temperature of my bedroom. I like that the thermometer is attached via a long wire, so I can move the thermometer a distance away from the heater, so it better represents the average temperature of the room. To help buffer the thermometer from brief changes in temperature (e.g. AC kicks on, hot or cold breeze), I wrapped it with a paper towel and tape.Setup was easy and I haven't experienced any glitches.The only thing I can complain about is the blue indicator light that turns on when the temperature is within the operating range. It's very bright. To address this, I put some tape over it, no big deal.
Cody
2025-07-25 12:26:49
I use this unit to "convert" a vintage (1970's) chest freezer into a refrigerator. The temperature range settings are very easy to adjust, and the included booklet has good instructions to do such. I appreciate that this unit displays the current temperature of the unit (via a temperature probe), as well as the current settings for max/minimum temperature ranges. I have been using this for several months and it hasn't skipped a beat. I have auxiliary analog thermometers in the actual fridge itself, and they indicate the same temperature as the digital readout on the unit itself. It is very user-friendly to set up and adjust. I am quite happy with this thermostat and would likely purchase another one if needed in the future.
Marc Rosenblum
2025-07-23 12:49:49
It arrived promptly and as described. It works well and is easy to set up.
Dad, the engineer
2025-06-21 12:51:09
Buying appliances in the middle of a supply chain crisis is no fun. When I purchased an extra refrigerator a year ago, I was lucky to find one at all. Unfortunately, I didn't get one that was "garage" certified, which meant I lost a bunch of perishables when my garage got too cold (the ambient thermostat will turn off the fridge when it gets too cold). The solution was the combination of a Diophros 1500W Space Heater, and a KETOTEK Digital Thermostat Outlet Plug.I'm only using the temperature control mode of the KETOTEK, but it's working great. I'm turning on my "dumb" space heater at 10C, and it shuts off at 12C. That's enough to keep the ambient thermostat on my fridge happy, and I won't have to waste a ton of energy on the heater when it's warm enough without it on. The thermocouple seems accurate, and it's great that you can locate it away from the outlet.I don't love that the design of the unit blocks other outlets on my power strip (it blocks 4 of them, due to the specific nature of my power strip). I also don't like that the blue LED is so bright, as it makes the LCD hard to read without direct lighting. Those are minor quibbles, though, as the KETOTEK is an inexpensive and reliable method for keeping my fridge working when the garage is cold - without wasting energy when it's warm enough for the fridge to operate normally. Recommended
Michael
2025-06-14 11:41:33
I've took to keeping a space heater in my room lately. The furnace never comes on when it is cold in this room, and when it does, it stays on so very long after it gets uncomfortably hot. So I closed that vent and got a space heater.Problem is. When the "heat" kicks off. The "fan" keeps going. That sucks in two ways. First it way to noisy. Then, the cold air from the fan hurts my head.BUT. turn the thermostat on my heater all the way hot. And use this little gem as the thermostat. And when it turns "off". No more fan. And this is accurate to a tenth of a degree fahrenheit. AND the temperature sensor (thermocouple), is no longer in the heater. Or even the plug. It is on the end of a 3 meter wire. Put that sensor up on the wall and enjoy a "true" 70.4 degrees fahrenheit. You get to set your "turn on" and your "turn off" temperature. So, in my scenario. Kick on at 70.2 and off at 70.4. That is a pretty tight tolerance, yes. And when the snow blows. That heater is on and off, every couple minutes. And when your thermocouple is accurate to a tenth of a degree. A person can do that. This is a must have for my situation.It will also go down. If you put the thermocouple in a refrigerator the the electronics are not functional. Maybe you are going to use it in the garage. It will go into "cooling" mode. If the "start temperature" is higher than the "stop temperature". That setting is automatic. Easy peasy. But as for settings. FIRST THINGS FIRST. You need to pick your measurement scale (fahrenheit or Celsius). You gotta long press "something". The "set" button?? maybe, i don't remember??
Ray M
2025-06-11 15:41:01
It works great on my 1500 watt shop heater.
Ed
2025-05-05 15:50:24
I got this to kick on a pair of 200w space heaters in a detached garage to keep it above freezing. So far it's been reliable at handling a 400w load.My only wish is that it had multiple outlets, I had to grab a cheap power strip as well.
Swatch
2025-03-14 09:04:54
I bought it and it worked okay but I need model with powered up cord.
Tom
2024-12-03 11:17:12
I like that it seems accurate, it's easy to adjust, but I didn't see a manual with it and I don't understand quite yet how the other modes work, but very ideal if I can program a cooling setpoint and heating setpoint! I have this connected to 120v fans mounted on my register upstairs. Upstairs used to be 5-6°C warmer then the main floor, now this helps me keep it within 2°C
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