W1209 12V -50-110°C Digital Thermostat Temperature Control Switch Sensor + Case

Envistia Mall
(43853)
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US $8.39
Condition:
New
More than 10 available1,283 sold
People want this. 278 people are watching this.
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Located in: Fort Collins, Colorado, United States
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Estimated between Thu, Aug 21 and Mon, Aug 25 to 94104
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30 days returns. Seller pays for return shipping.
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eBay item number:192400073360
Last updated on Aug 16, 2025 14:24:17 PDTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
Display
Digital
Modified Item
No
Country/Region of Manufacture
China
Custom Bundle
No
UPC
0732387203216
Brand
Sensor Switch
Sensor Type
Thermistor
Analog/Digital
Digital
Model
W1209
MPN
EM-THERM-0004-KIT
Category

About this product

Product Identifiers

Brand
Sensor Switch
MPN
EM-THERM-0004-KIT
GTIN
0732387203216
UPC
0732387203216
Model
W1209
eBay Product ID (ePID)
581151855

Product Key Features

Sensor Type
Thermistor
Analog/Digital
Digital

Item description from the seller

About this seller

Envistia Mall

99.6% positive feedback•198K items sold

Joined Jun 1999
Usually responds within 24 hours
Envistia Mall specializes in Arduino, Digispark, STM32, NodeMCU, PJRC Teensy and BBC micro:bit microcontrollers, Sollae Systems' PHPoC Programmable IoT Development Boards and EZTCP Serial Networking ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
5.0
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
5.0

Popular categories from this store

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Arduino & DIY MicrocontrollersSensor & Detector ModulesPower Supply & Voltage ModulesMotor ControllersSolar Charge ControllersWireless & Networking ModulesOther Electronic ModulesAudio & StereoComputers & Networking

Seller feedback (46,312)

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  • l***k- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Great seller. Nice item but need to be very careful not to over tighten hardware.
  • i***n (40)- Feedback left by buyer.
    Past month
    Verified purchase
    Seller quickly responded to my feedback and offered refund.
  • w***z (472)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Great ebayer, nice product
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Product ratings and reviews

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4.5
72 product ratings
  • 56 users rated this 5 out of 5 stars
  • 7 users rated this 4 out of 5 stars
  • 4 users rated this 3 out of 5 stars
  • 1 users rated this 2 out of 5 stars
  • 4 users rated this 1 out of 5 stars

Good value

Would recommend

Good quality

Most relevant reviews

See all 64 reviews
  • by galantuser
    Feb 24, 2020Top favorable review

    Versatile, and good quality

    Excellent for DIY projects. It memorizes your settings even if the power is completely cut off. There are quite a few settings allowing you to calibrate, setting low/ high temperature, etc. I did not like that the length of the sensor was barely 30cm, but you can buy longer (search for NTC 10k) or just extend it yourself. It powers up and shows temperature as low as 5volts, however the relay seems to require at least 7volt to function reliably. I like the case that came with it. You have to put it together yourself, but if you're able to use this item, you'll have no problem putting this together. In case you're wondering: you just peel off the brown foil the plastic pieces come wrapped in. The case has openings, so you can still use the buttons and fasten/ loosen the wires without ...

    Verified purchase: YesCondition: NewSold by: modulefans

  • by radion8lu
    Jan 26, 2018Top critical review

    W1209 Digital Temperature Control

    This is a super little circuit board for temperature measurement and control. A very nice design and easy to program. Mine arrived with a defective "-" switch. I did not try to return it. I will fix it myself. The directions are fair. They cover Parameters P0 through P6. What about P7?? Nothing is mentioned about it. However, most people will figure it out. For the price you can not beat it. If it was not for the flakey switch I would rate the quality as good and give it 5 stars. Overall it is a neat device!!

    Verified purchase: YesCondition: NewSold by: envistia

  • by efs.tx
    Feb 02, 2021

    Nice but wish the relay was rated higher.

    It works well, although I have concerns about the low relay amperage rating. Because the rating on the relay is low, the neutral wire (not the line wire) must be used for the switch on the heater or fan...this is not the ideal way to switch anything with voltage that can kill. The proper way to switch something is to use the load wire and not the neutral wire. You don't want power thru the device when it is off. For the price is is great though. I would be willing to pay more for one with a higher rated relay though.

    Verified purchase: YesCondition: NewSold by: envistia

  • by bplawler
    May 07, 2021

    Watch the voltage, and it works great!

    This is a nice thermostat. It works perfectly when powered by 9V – not 12V! One thing to note (and it's mentioned in the company's literature): don't feed it more than 12V. It will burn up (I know). It's really a 9V board, with the ability to handle voltages up to 12V, but no more! I ended up buying a second one after frying the first, and put a 9V buck converter in front of it. That solved the problem, and it now works perfectly.

    Verified purchase: YesCondition: NewSold by: envistia

  • by badbugbob
    Apr 22, 2021

    Good module but I suggest using an external relay for high currents

    After a couple weeks of operating an 8-amp resistive load it stopped working. Either the relay, PC board trace, or terminal strip overheated and fried, it was too burned to tell where the problem started. Price is good and the module works well, just watch out for high-power loads.

    Verified purchase: YesCondition: NewSold by: envistia

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