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Model: W1209
Dimensions: 48.5 * 40mm
Temperature Control mode: ON / OFF
Temperature Range :-50 - 110 degree centigrade
Resolution: When temperature is 0.1 degree, the resolution is -9.9~99.9, other temperature segment is 1 degree.
Control Accuracy: 0.1 degree
Hysteresis Accuracy: 0.1 degree
Refresh Rate: 0.5s
High Temperature Protection 0 - 110 degree centigrade
Supply Voltage: DC 12V
Static Current: Less than 35MA, attract current less than 65MA
Output Voltage: DC 12V
Output Power: 20A relay
Measurement Input: NTC (10K 0.5%) Waterproof Sensor
Environmental Requirements: -10 - 60 degree centigrade; Humidity 20% - 85%
Package:
1 x Temperature Control Switch W1209 with Acrylic Box
Married and happy
Reviewed in the United States on February 1, 2024
This product came unassembled and did not include instructions for assembly and programming.
Kel
Reviewed in Canada on September 22, 2023
I used this thermostat for a 12V fan that I needed to install to keep the area of my inverter cool. The fan turns on at the set temp (28C already preset) to cool down and turns off when it reaches the cooling preset temp. And turns on at 33 C and stays on until reaches 28C.
Gerald
Reviewed in the United States on May 5, 2021
Failed the relay contacts after a few hours running at 75% capacity, even with a heat sink attached to the relay. Not unexpected, but, I wanted to give it a try. It's a shame the massive capacity claim, however, the attractively built unit does a decent job tracking the temp. Even after the relay contact failure, the unit continued to run, so I listened for the click and controlled my heater manually until I cold get a replacement controller. The box was reasonable to assemble using my third arm and hand, fitting those tiny bits, pieces, nuts, and bolts.Didn't bother with a return, although, I should have.
Daniel
Reviewed in the United States on August 25, 2020
PRO:Accurate temp readings from thermistor.Cute acrylic case...but you need to trim down the soldered leads on the PCB to fit into the case See pic).It is just a circuit open/close switch actuated on rising or falling temperature.Solid little item.Con:Not waterproof at all...but wasn't expected to be, so not a con really.
J. Thomas
Reviewed in the United States on February 22, 2020
This thing just works. It's that simple. Connect the appropriate relay for the load you will be pulling, mount the sensor in the correct spot and set it up. That is the last I had to think about mine.
Aaron w
Reviewed in the United States on November 19, 2020
I would recommend using a relay to power anything and use this as the trigger for the relay. Ordered one and it couldn't handle 6.3 amp, burned up the relay built in. Refund was issued fast, ordered two more from another company for $1 cheaper than this company.
Magoo356
Reviewed in the United States on April 6, 2020
I love this product! I have built several of these into my projects for amateur radio. The controller closes the N.O. contacts (K0 to K1) depending on where you set the temperature on the led readout. It does not provide any voltage to the contacts, however you can just jumper 12v to one side of the relay (K0) and when the relay closes, it will provide 12v to your device on K1. Easy-Peasy. My only gripe is there is NO MANUAL included, so after a bunch of button pushing, you will figure it out. (Three buttons = SET, +, -) I did play around with it and if you HOLD a button, you enter different mode(s) to maybe set C or F but I have never gotten it to stay in Fahrenheit mode. I just google C to F and set it to the desired temp. One last gripe is the sensor cable is not very long (12"). I wish it was longer.
bc03877
Reviewed in the United States on May 29, 2019
I bought this to control the fans for the lights on my aquarium and it’s working perfectly. I have a heavily planted tank and the lights can raise the tank temperature sometimes but this little thermostat kicks on and cools them down then cuts the fans off when they’re cool. It does use Celsius and it doesn’t come with instructions but it’s not that hard to figure out.
Ruckus
Reviewed in the United States on April 19, 2019
Exactly what I needed. I live in Texas where it gets so hot the roads get soft in the summer. In my truck I installed a fan to keep my sub amp cool during those hot days. I was controlling it with the ignition switch. My kids mentioned it’s really noisy in the back seat. I have a 2007 Tacoma crew cab. So this little controller is what I needed. First I got a led light and a 12vdc power supply and bench tested and verified the temp read out. It worked perfectly. So I set it up to 40c (104f) and installed it in my truck. I installed the temp probe on the cooling fins. After playing some DJ Magic Mike the temp only rose up to 37.5c. So I’m still waiting for a hot enough day to truly test it. The bench test passed with flying colors. I will check back in a couple of months from now with an update.
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