W1209 DC 12V Digital Temperature Controller Board Blue Digital Display Thermostat -50-110°C Electronic Temperature Temp Control Module Switch with Waterproof Case (1-Pack)
$5.99
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Price: $5.99
(as of Nov 22, 2025 03:59:21 UTC – Details)
Product description
W1209 Temperature Controller Module:
Model: W1209 with CaseInput Voltage: DC 12VTemperature Sensor Type: NTC(10K 0.5%) Waterproof SensorStable Performance, Good Consistency
W1209 Digital Temperature Controller
Specification:
Type: Digital ThermostatDisplay Type: 0.28inch 3-Bit Digital TubeResolution: 0.1 (9.9~99.9), 1 (other)Refresh Frequency: 0.55sReturn Difference Accuracy: 0.1Output: 10A One-Channel RelayStatic Current: 35MASuction Current 65MA
Features: Embedded CPU Chip (MCU) Lower Power Consumption Automatic Power Set Memory Stability, Consistency and Reliability
NTC Probe:
XH-W1209 Micro Temperature Controller Equipped with NTC10K Waterproof Probe which Allows to Control the Temperature Even of Fluids,Allowing the Controlled Heated or Cooling
How to Setting:
Long Press SET for 5s to Get Menu, Starts at P0, Press +/- to Get Next P-Parameter, Press Set to Determine the P-Parameter, Press +/- to Set the Desired Value for the Selected Parameter, Press SET to Accept it, Long Press +/- Reset to Default
Application:
With W1209 Module, You Can Control Power to Most Types of Electrical Device Based On The temperature Sensed Intelligently by the Included High Accuracy NTC Temperature Sensor ,Widely Used for Incubation Temperature Control,Scientific Planting,etc.
W1209 DC Digital Temperature Controller Board:Input Voltage: DC 12V;Output: 10A One-Channel Relay;Type: Digital Thermostat
High Accuracy:W1209 Digital Temperature Controller with 3-Digit LED Display and Using SMD Patch Technology,High Accuracy, Stable Performance
Intelligent Control: W1209 Temperature Sensor Embedded CPU Chip (MCU), More Intelligent, Lower Power Consumption
Tested Multiple Times:The Module Has Been Tested for Stability, Consistency and Reliability. Wide Temperature Measuring Range -50~110°C, Control Precision: 0.1 Celsius
NTC10K Waterproof Probe:XH-W1209 Micro Temperature Controller Equipped with NTC10K Waterproof Probe which Allows to Control the Temperature Even of Fluids,Allowing the Controlled Heated or Cooling
8 reviews for W1209 DC 12V Digital Temperature Controller Board Blue Digital Display Thermostat -50-110°C Electronic Temperature Temp Control Module Switch with Waterproof Case (1-Pack)
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$5.99
tracy jarrell –
Great value for what you get
Works great, was easy to assemble and program, great for temperature control
Brandon –
Works great until it quit
It worked for a little bit but then quit but when it did work it worked flawless prolly just a hiccup one . If it would still be working i woulda gave 5 stars because the case didnt break like alot said it would and for the price you cant beat it.It was made right
Amazon Customer –
Easy install
So far so good. I will admit I was a little confused working this. But I figured it out. The relay just connects the load terminals so I wired the feed and load positive to the positive terminal, the load negative to one of the relay terminals and jumpered the other relay terminal to the negative feed. All works as it should.This thing is powering a fan in my camper electrical cabinet, the temp sensor works well and is extremely responsive. All the soldering looks to be good quality. Hopefully it lasts a long time. As others mentioned the case kinda sucks but it does it’s job.
John White –
Not completely assembled but nice when it’s together
Not completely assembled
Dave Siwarski –
Sensor failed.
Sensor failed after 2 weeks and unfortunately I missed the return due to waiting to long by 1 day. Other than that, it worked fine when sensor was working.
GOTROK –
Works well
Works great. I’ve got 5 of these monitoring enclosed areas where PDUs, a 3D printer, charging stations, etc. are located. Plugged a few 12v computer fans up to them so heat behind the equipment can be blown out as needed.2 semi-negatives:- is only in Celsius — I don’t mind tho. Set it and forget it- the LED readouts are rather bright — would not be fun in a bedroom or similar. Is no big deal in my office
Rick Westfield –
It works.
I used this thermostat to control a fan to keep my shed from getting too hot. The instructions could be more detailed, but once you figure out how to use the buttons to set the temperature, mode, and hysteresis, it is easy. Some of the 4 little screws that hold the wires were very hard to loosen at first (I almost gave up), but they were fine once I applied enough torque to loosen them. I attached the bottom board to the controller board with the 4 biggest screws (and spacers) provided, but the top board did not have an opening for the LED display, so I didn’t attach it, but that’s OK since it’s not really needed.
David R. Sauter –
It’s a switch a centigrade control switch
Item is ok case is a bit cheap but so is the price. I’d pay more for it if it came with decent instructions. You can find them on you tube fine it’d just be nice if they sent a wiring diagram with it!