--- product_id: 294749804 title: "DC 12V Fahrenheit Digital Temperature Controller 10A 1 Relay with Sensor" brand: "bayite" price: "€ 1.87" currency: EUR in_stock: false reviews_count: 5 category: "Bayite" url: https://www.desertcart.ie/products/294749804-dc-12v-fahrenheit-digital-temperature-controller-10a-1-relay-sensor store_origin: IE region: Ireland --- # 10A relay capacity Low 3W power consumption Wide -4 to 212°F range DC 12V Fahrenheit Digital Temperature Controller 10A 1 Relay with Sensor **Brand:** bayite **Price:** € 1.87 **Availability:** ❌ Out of Stock ## Summary > 🌡️ Stay cool or cozy—control your climate like a pro! ## Quick Answers - **What is this?** DC 12V Fahrenheit Digital Temperature Controller 10A 1 Relay with Sensor by bayite - **How much does it cost?** € 1.87 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/294749804-dc-12v-fahrenheit-digital-temperature-controller-10a-1-relay-sensor) ## Best For - bayite enthusiasts ## Why This Product - Trusted bayite brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Protection:** Built-in compressor delay and data retention ensure reliable, long-term use - • **Robust Relay Power:** Handles up to 10A/250VAC to control heavy-duty appliances confidently - • **Dual Mode Flexibility:** Seamlessly switch between heating or cooling modes for any environment - • **Energy Efficient Design:** Consumes less than 3W, saving power while protecting your devices - • **Precision Climate Control:** Maintain exact temps with ±0.5°F accuracy and 0.1°F resolution ## Overview The bayite DC 12V Fahrenheit Digital Temperature Controller offers precise temperature regulation from -4 to 212°F with ±0.5°F accuracy. Featuring heating and cooling modes, a clear LED display, and a powerful 10A relay, it’s perfect for maintaining stable environments in freezers, terrariums, or electronics. Its low 3W power consumption and smart compressor delay protection make it an energy-efficient, reliable choice for professional-grade temperature management. ## Description This is a DC 12V Fahrenheit Digital temperature controller. It can control the power to a freezer to prevent it from getting too cold, or control the power to a terrarium to prevent it from getting too hot, maintain a stable environment. This controller provides heating and cooling modes and temperature alarm function. For example: If you choose heating mode, set control Value to 100°F, set span value to 10°F. The relay will be connected when temp drop to 90°F. The relay will be disconnected when temp reaches 100°F; If you choose cooling mode, set control Value to 100°F, set span value to 8°F. The relay will be connected when temp reaches 108°F. The relay will be disconnected when temp drops to 100°F Specification: 1.Power supply for the controller: DC 12V 2.Temperature unit: Fahrenheit, Measure range: -4 ~ 212°F 3.Temperature measure resolution: 0.1 4.Accuracy: ±0.5 5.Working mode: Heating OR Cooling mode 6.Slew range of temp controlling: 1 - 25(Max temp span between ON and OFF) 7.Control resolution: 1(Minimum temp span between ON and OFF) 8.Power consumption: less than 3W 9.Relay contact capacity: 10A/250VAC, 10A/110VAC 10.Data retention: Yes 11.Compressor delay protection: YES 12.Product size:8.5*7.5*3.5cm / 3.4*3*1.4in 13.Sensor Cable length: 3m/9.8ft Package Content: 1x Digital Temperature controller Review: It works well. - Good instructions if you read schematics and understand basic electronics. (I you do not, don't buy this!) The output is for driving a relay coil or other simple LOW CURRENT circuit. Installed in a sheltered but unconditioned locker in a travel trailer, it has been running a water tank heater for months with no problems. Review: Works for radiator fans. - This thing is exactly what I was hoping it was. I installed it as a cooling fan thermostat for my pickup. Of course, the internal relay shouldn't be loaded with an 80 watt fan, so I needed an additional relay to set everything up correctly. It reads down to tenths of a degree. The lead for the temperature probe that came with it was plenty long enough to run from inside the cab on the driver's side to the opposite side of the radiator. I wired it up as a ground side switch to reduce wire counts on long runs. I've probably used 5 "automotive" adjustable electric thermostats in as many years, one of each brand I could find. This setup has so far outlasted 3 of them. Doesn't seem to be as sensitive to voltage fluctuations, has a digital readout, and cost less than $20. Of course, this isn't meant to run an automotive cooling fan, and doesn't have an input for the A/C fan like the others do, and requires more complex wiring. Anyways, can be set to run a heater (on when cold, off when hot), a cooler (on when hot, off when cold) adjustable delta T, adjustable trigger temperature (whole degrees), and a warning for too hot/cold (flashing display, no sound). Also, it retains settings when disconnected from power. Update: 6-15-18 Still going strong, and I’ve had absolutely 0 problems. Works much better than everything else I’ve tried, and I only have it zip tied to the bottom side of the dash. Plenty enough vibration resistance. ## Features - Temperature unit: Fahrenheit(°F), Measure range: -4 ~ 212 °F - A mini all-purpose temperature controller w/ clear LED display - Working mode: Heating or Cooling mode - Control resolution: 1 degree (Minimum temp span between ON and OFF) - packed included 1pc ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B011VGAPOC | | Brand | bayite | | Brand Name | bayite | | Colour | As shown in the image | | Country of Origin | USA | | Customer Reviews | 4.6 out of 5 stars 426 Reviews | | Display Type | LED | | Included Components | 1 | | Item Weight | 0.31 Pounds | | Manufacturer | bayite | | Material | As shown in the image | | Material Type | As shown in the image | | Model Number | CECOMINOD034943 | | Number of Items | 1 | | Part Number | BAYITE-TCF-3A035 | | Voltage | 12 Volts | ## Product Details - **Brand:** bayite - **Colour:** As shown in the image - **Item Weight:** 0.31 Pounds - **Material:** As shown in the image - **Voltage:** 12 Volts ## Images ![DC 12V Fahrenheit Digital Temperature Controller 10A 1 Relay with Sensor - Image 1](https://m.media-amazon.com/images/I/51VsoXIyTnL.jpg) ![DC 12V Fahrenheit Digital Temperature Controller 10A 1 Relay with Sensor - Image 2](https://m.media-amazon.com/images/I/51IEcO2l81L.jpg) ![DC 12V Fahrenheit Digital Temperature Controller 10A 1 Relay with Sensor - Image 3](https://m.media-amazon.com/images/I/71grQ+WgMFL.jpg) ![DC 12V Fahrenheit Digital Temperature Controller 10A 1 Relay with Sensor - Image 4](https://m.media-amazon.com/images/I/71QT514m34L.jpg) ![DC 12V Fahrenheit Digital Temperature Controller 10A 1 Relay with Sensor - Image 5](https://m.media-amazon.com/images/I/511bwdIaNHL.jpg) ## Questions & Answers **Q: Can the sensor be submerged in a water tank to read water temperature?** A: I sealed the sensor at the end of the wire inside a 4-inch length of heat-shrink tubing and sealed the ends with silicone. I use mine to turn a heating element on/off during the winter to keep a small livestock water tank from freezing. **Q: can the sensor wires be lengthened** A: Simple answers: It uses an 10K NTC sensor that can be lengthened up to 100 feet with 18 gauge (AWG) SHIELDED wire. Up to 10 feet non-shielded. **Q: Can you turn it on and off?** A: Yes. You can turn it on and off. Press the button "Rst" to turn it on/off. **Q: How do I switch between cold and hot mode** A: Just change the HC value. HC=H for Heating Mode. HC=C for Cooling Mode 1.Press SET for 3 secs, HC appears on screen, release SET button 2.Press SET once to enter HC parameter 3.Press UP/DOWN button to select C or H, Press SET once again and back to HC(main menu) ## Customer Reviews ### ⭐⭐⭐⭐⭐ It works well. *by M***. on 13 April 2024* Good instructions if you read schematics and understand basic electronics. (I you do not, don't buy this!) The output is for driving a relay coil or other simple LOW CURRENT circuit. Installed in a sheltered but unconditioned locker in a travel trailer, it has been running a water tank heater for months with no problems. ### ⭐⭐⭐⭐⭐ Works for radiator fans. *by R***4 on 4 June 2016* This thing is exactly what I was hoping it was. I installed it as a cooling fan thermostat for my pickup. Of course, the internal relay shouldn't be loaded with an 80 watt fan, so I needed an additional relay to set everything up correctly. It reads down to tenths of a degree. The lead for the temperature probe that came with it was plenty long enough to run from inside the cab on the driver's side to the opposite side of the radiator. I wired it up as a ground side switch to reduce wire counts on long runs. I've probably used 5 "automotive" adjustable electric thermostats in as many years, one of each brand I could find. This setup has so far outlasted 3 of them. Doesn't seem to be as sensitive to voltage fluctuations, has a digital readout, and cost less than $20. Of course, this isn't meant to run an automotive cooling fan, and doesn't have an input for the A/C fan like the others do, and requires more complex wiring. Anyways, can be set to run a heater (on when cold, off when hot), a cooler (on when hot, off when cold) adjustable delta T, adjustable trigger temperature (whole degrees), and a warning for too hot/cold (flashing display, no sound). Also, it retains settings when disconnected from power. Update: 6-15-18 Still going strong, and I’ve had absolutely 0 problems. Works much better than everything else I’ve tried, and I only have it zip tied to the bottom side of the dash. Plenty enough vibration resistance. ### ⭐⭐⭐⭐⭐ great little device, *by B***. on 16 January 2025* i am using to regulate the temp in my lithium battery housing, these are in a space that will go down to below 0 ## Frequently Bought Together - bayite DC 12V Fahrenheit Digital Temperature Controller 10A 1 Relay with NTC 10K Sensor - irhapsody 4-PIN 40/30AMP 12V DC Waterproof Relay with Harness - Heavy Duty 12 AWG Tinned Copper Wires, 1 Pack SPST Automotive Relay - Blue Sea Systems DualBus 100A Common BusBars --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ie/products/294749804-dc-12v-fahrenheit-digital-temperature-controller-10a-1-relay-sensor](https://www.desertcart.ie/products/294749804-dc-12v-fahrenheit-digital-temperature-controller-10a-1-relay-sensor) --- *Product available on Desertcart Ireland* *Store origin: IE* *Last updated: 2026-09-18*