--- product_id: 610544381 title: "HiLetgo 2pcs W1209 with Case 12V DC Digital Temperature Controller Board Micro Digital Thermostat -50-110°C Electronic Temperature Temp Control Module Switch with 10A One-Channel Relay and Waterproof" brand: "hiletgo" price: "B/.128" currency: PAB in_stock: true reviews_count: 5 url: https://www.desertcart.com.pa/products/610544381-hiletgo-2pcs-w1209-with-case-12v-dc-digital-temperature-controller store_origin: PA region: Panama --- # 12V DC power efficiency 10A relay for heavy loads 0.1°C precise control HiLetgo 2pcs W1209 with Case 12V DC Digital Temperature Controller Board Micro Digital Thermostat -50-110°C Electronic Temperature Temp Control Module Switch with 10A One-Channel Relay and Waterproof **Brand:** hiletgo **Price:** B/.128 **Availability:** ✅ In Stock ## Summary > 🌡️ Take control of your climate like a pro — precision meets power! ## Quick Answers - **What is this?** HiLetgo 2pcs W1209 with Case 12V DC Digital Temperature Controller Board Micro Digital Thermostat -50-110°C Electronic Temperature Temp Control Module Switch with 10A One-Channel Relay and Waterproof by hiletgo - **How much does it cost?** B/.128 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/610544381-hiletgo-2pcs-w1209-with-case-12v-dc-digital-temperature-controller) ## Best For - hiletgo enthusiasts ## Why This Product - Trusted hiletgo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Embedded MCU:** Low power consumption with intelligent automatic power memory for seamless operation. - • **Robust 10A Relay Switch:** Control high-power devices confidently with a durable one-channel relay rated for 10 amps. - • **User-Friendly Interface:** Intuitive menu navigation with long-press and +/- buttons for quick, hassle-free setup. - • **Pinpoint Precision Control:** Maintain your environment within 0.1°C accuracy for flawless temperature management. - • **Waterproof Protective Case:** Durable casing ensures reliable performance even in challenging environments. ## Overview The HiLetgo W1209 Digital Temperature Controller is a compact, 12V DC device featuring an embedded MCU for intelligent, low-power operation. It offers ultra-precise temperature control with 0.1°C accuracy, a robust 10A relay for switching electrical loads, and a waterproof case for durability. Ideal for aquarium, HVAC, or industrial temperature regulation, it combines reliability with user-friendly controls and automatic power memory. ## Description International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. ## Features - 100% complete machine patch, wave soldering, stable performance, good consistency. - Embedded CPU chip (MCU), more intelligent, lower power consumption. - Automatic power set memory (MCU built-in EEPROM memory unit). - Control accuracy of 0.1 degrees Celsius. Have been tested for stability, consistency and reliability. - Tips: - long press set to get menu, starts at P0 - press +/- to get next P-parameter - press set to choose that parameter - press +/- to select the value you want for that parameter - press set to accept it - long press +/- = reset to default - power-out does reset to default - default temp set is 34.5C ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B07VDRGK9F | | Best Sellers Rank | #252,673 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #1,433 in Temperature Controllers | | Brand Name | HiLetgo | | Colour | With Case | | Country Of Origin | USA | | Customer Reviews | 4.2 4.2 out of 5 stars (421) 4.2 out of 5 stars | | Display Type | LED | | Item Weight | 0.09 Kilograms | | Manufacturer | HiLetgo | | Material Type | Plastic | | Model Number | 3-01-1310 | | Part Number | 3-01-1310 | | Voltage | 12 Volts | ## Product Details - **Colour:** With Case - **Brand:** HiLetgo - **Voltage:** 12 Volts - **Material:** Plastic - **Item Weight:** 0.09 Kilograms ## Images ![HiLetgo 2pcs W1209 with Case 12V DC Digital Temperature Controller Board Micro Digital Thermostat -50-110°C Electronic Temperature Temp Control Module Switch with 10A One-Channel Relay and Waterproof - Image 1](https://m.media-amazon.com/images/I/61zhEBHUK+L.jpg) ![HiLetgo 2pcs W1209 with Case 12V DC Digital Temperature Controller Board Micro Digital Thermostat -50-110°C Electronic Temperature Temp Control Module Switch with 10A One-Channel Relay and Waterproof - Image 2](https://m.media-amazon.com/images/I/71DLrkx-nML.jpg) ![HiLetgo 2pcs W1209 with Case 12V DC Digital Temperature Controller Board Micro Digital Thermostat -50-110°C Electronic Temperature Temp Control Module Switch with 10A One-Channel Relay and Waterproof - Image 3](https://m.media-amazon.com/images/I/51ACIP2e6dL.jpg) ![HiLetgo 2pcs W1209 with Case 12V DC Digital Temperature Controller Board Micro Digital Thermostat -50-110°C Electronic Temperature Temp Control Module Switch with 10A One-Channel Relay and Waterproof - Image 4](https://m.media-amazon.com/images/I/51pdgkBJc3L.jpg) ![HiLetgo 2pcs W1209 with Case 12V DC Digital Temperature Controller Board Micro Digital Thermostat -50-110°C Electronic Temperature Temp Control Module Switch with 10A One-Channel Relay and Waterproof - Image 5](https://m.media-amazon.com/images/I/51QcbZqUZjL.jpg) ## Available Options This product comes in different **Colour** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Air Conditioning Freezing Fixed! *by on Reviewed in the United States 3 October 2025* While there are plenty of professional fixes for central AC that freezes up, sometimes it's just a combination bad duct airflow, low outside temp, and/or too low thermostat set. Obviously you should make sure you aren't low on refrigerant or the air filter is dirty, but if you have old ducting or a miss-sized unit, it just happens sometimes (especially fall and spring). If your wallet doesn't mind the thousands of dollars to get a new AC installed or otherwise remedied, skip this.For the rest of us, this little gem you just provide it 12V (find an old wall wart, or buy one for a few bucks), cut one of the signal wires from the furnace to the AC (usually 2 of them, carrying low voltage AC, doesn't matter which one you cut), strip the ends on both sides of the cut and put them into the two relay legs (K0 K1), and then tape the temp probe to the copper coolant-in line.Set the setpoint to somewhere a little above freezing (5C or so), set P0 to "C" for cooling, and then set P5 (restart time) to 5 minutes.Now, if the line approaches freezing, it will cut out the AC unit outside while the furnace/air-handler fan still blows air over the too-cold coils warming them up. The restart delay prevents short-cycling the AC. Cheap, easy, works. Will mask a dirty air filter, but you're changing that on a regular schedule, right? ### ⭐⭐⭐⭐⭐ Control anything electrical through the flow through relay (up to 10A) *by on Reviewed in Canada 27 June 2023* I used this as a fan controller for my motorcycle. I put the sensor into the radiator fins and dialed in the temperature I wanted to see on the temp gauge. The fan comes on and goes off precisely and crisply compared to the thermo switch that was impossible to find for an older bike. It now starts the fan smartly as opposed to groaning to life with the thermo switch. Just connect the device (+) source power to the running light circuit which comes on when the engine is running. For the fan, provide frame ground, and positive from battery, then through 10A fuse, then through switched relay onboard the device to the fan positive. The programming is simple if you google the device specs on YouTube. ### ⭐ Got ripped off but needed it. *by on Reviewed in Canada 9 July 2023* I only got one in the package. Was supposed to come with two.And waterproof lol. It should come with a tube of silicone if you’re gonna try to say it’s waterproof cause that what you’ll need to use. I’ve used these before and they work good is the only reason I didn’t send it back. ## Frequently Bought Together - HiLetgo 2pcs W1209 with Case 12V DC Digital Temperature Controller Board Micro Digital Thermostat -50-110°C Electronic Temperature Temp Control Module Switch with 10A One-Channel Relay and Waterproof - KEYFANCLUB 2-Pack 120mm Fan DC 12V Computer Fan 120mm x120mm x 25mm 2-Pin High Performance Cooling Fan - KEYFANCLUB 2-Pack 80mm x 25mm DC 12 Volt Fans 2-Pin Brushless Replacement Cooling Fan --- ## 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.com.pa/products/610544381-hiletgo-2pcs-w1209-with-case-12v-dc-digital-temperature-controller](https://www.desertcart.com.pa/products/610544381-hiletgo-2pcs-w1209-with-case-12v-dc-digital-temperature-controller) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-05-31*