Compact digital thermostat with isolated relay output and 3 digit 0.28” LED display.
Features:programmable set Points, Cool or Heat control, Hysteresis,
Delay and High Temp. Alarm.
Temperature Range: +15 to +220 deg. Fahrenheit
Power: 12VDC Current: ~65mA Relay energized
Refresh rate: 0.5sec. Resolution: 0.1deg . from +15.0 to +220°F
1.0deg. for above 100°F
Accuracy: Measurement : 0.1deg.
Relay: SPST-NO 20A/14VDC; 20A/125VAC
Sensor: 10k NTC waterproof probe (12in. leads)
Temp. Range: +15 to +140°F;
Terminal Strip for Power & Relay contacts. L: 1-7/8” W: 1-9/16” H: 5/8” WT: .04
WARNING: This product can expose you to chemicals including Nickel which is known to the State of California to cause cancer and which is known to the State of California to cause birth defects and/or other reproductive harm. For more information, go to www.P65Warnings.ca.gov
Click to see Why is this here?
As of August 2018 the State of California has changed the requirements of the “Prop 65” law. We now must list on our website any possible chemicals the can cause cancer, birth defects or reproductive problem.
As an example:
ABS plastic contains styrene
PVC wire insulation can contain Di(2-ethylhexyl)phthalate (DEHP)
electrolytic capacitors can contain Ethylene glycol
Brass can contain Lead
flame retardant pc boards can contain Tetrabromobisphenol A (TBBPA)
Aluminum alloys can contain Chromium
To put it simply we are a small company and do not have the resources to test every single part, so we list every thing as hazardous. Please recycle all electronic parts responsibly and under no circumstance eat, drink or smoke these parts and wash your hands after touching!
This is a simple bang-bang controller whose setpoint is adjustable over a wide range. It has a hysteresis setting but that simply sets a second point away from the actual setpoint at which its relay is closed not symetrical about the setpoint. Its probe is an NTC thermistor with a plug connection. As mentioned, the relay and some other components prevent the LED display from being flush mounted, however the display is bright and is easy to read. This controller works well for simple applications although the 20 Amp rating for its relay is probably a bit overstated. Using this controller to operate a heavier duty relay, perhaps a solid state relay, for large loads is the way to go, and then it can be a very useful controller in a small package.
I had reviewed this item previously and didnt like what I saw. Problem was that I got a defective unit! I have since received a replacement and it DOES retain its settings. I just wish that the connectors and relay were mounted on the back of the board so it could be easier to use. Other than that, this is a very nice temperature controller.
- Richard Schmidt, CA
Programmed settings not permanent
This is a nice unit but it looses its programmed settings after a power down. Im not sure how long the power can be removed before it resets but I found that it did not retain the settings if power was removed for more than a few minutes. I wish this information was contained in the product description.
I was planning on using this in some battery powered equipment that could be powered down for hours or days and still retain the settings - didnt happen. Sad that this was not the case here.
- Richard Schmidt, CA
I ordered one of these, after hooking power to it and programming the board was so hot you could not touch it and then it died.
- Donald Wilson, TX
nice controller for those building a solar hot air panel from cans thanks
Beautiful American Made and fantastic priced product. Buy it people, It is Great
Good incubator control
Bought one of these for use as a temperature control on a diy chicken egg incubator. Works very well.
Digital Temperature Controller FAHRENHEIT
A really useful device. I have found many uses for these controllers. How could you even buy the parts for what these units cost? The units tolerate the temperature extremes of my geographic location and also seem to have a high ESD tolerance.
The instruction sheet needs to be corrected for some items however;
the spec on the Fahrenheit unit quotes the Celsius unit spec of minus 50. Fahrenheit spec is -58F before it LLLs.
Menu P4 would be better stated as calibration not correction. Changing the calibration allows you to increase the sensor cable length and then re-trim it back in the P4 menu to former accuracy.
I have used these temp controllers in a 4 stage peltier cooled night sky camera to control the cooling. A heatsink fan controller for a 100W Broadband minus green LED grow light . And a furnace flue booster fan control.
All of the above just keep on working.
- Jim, MN
Works really well
Works great, temperature is very accurate. I used it for my RV hot water recirculation system and has been working flawlessly.
This is a 10 !
I use this device as the basis for my own commercial refrigeration thermostat by incorporating high current relays with it to start my motor loads.
Thus far its been 100% reliable, easy to apply and very economical!
- Tom, FL
took for ever to calibrate.comes with instructions but not easy,too many variables to fool with.not for the impatient person. used mine to start digital timer when water boils for precisely timed soft boiled eggs.