--- product_id: 120963690 title: "Generic W1209 Digital LED DC 12V + NTC Sensor heat cool temp thermostat temperature switch Module On/Off Controller electronic Board DIY" brand: "themisto" price: "20 zł" currency: PLN in_stock: true reviews_count: 8 category: "Themisto" url: https://www.desertcart.pl/products/120963690-generic-w1209-digital-led-dc-12v-ntc-sensor-heat-cool store_origin: PL region: Poland --- # 12V low voltage power 0.1°C precision accuracy NTC waterproof sensor Generic W1209 Digital LED DC 12V + NTC Sensor heat cool temp thermostat temperature switch Module On/Off Controller electronic Board DIY **Brand:** themisto **Price:** 20 zł **Availability:** ✅ In Stock ## Summary > 🌡️ Master your microclimate with precision and style! ## Quick Answers - **What is this?** Generic W1209 Digital LED DC 12V + NTC Sensor heat cool temp thermostat temperature switch Module On/Off Controller electronic Board DIY by themisto - **How much does it cost?** 20 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/120963690-generic-w1209-digital-led-dc-12v-ntc-sensor-heat-cool) ## Best For - themisto enthusiasts ## Why This Product - Trusted themisto brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Powerhouse:** Sleek 48x40x14mm design fits anywhere, powered by safe 12V DC for versatile DIY projects. - • **Plug & Play Simplicity:** No programming needed—intuitive 3-button keypad lets you set and forget with ease. - • **Built-In Relay Automation:** Seamlessly switch devices on/off based on temperature thresholds—smart control made simple. - • **Real-Time Digital Display:** Instantly monitor your environment with a bright 3-digit 7-segment LED readout. - • **Pinpoint Temperature Control:** Achieve ultra-precise climate management with 0.1°C accuracy—no guesswork, just perfect comfort. ## Overview The W1209 Digital Temperature Controller is a compact, 12V-powered module featuring a high-accuracy (0.1°C) NTC waterproof sensor and a clear 3-digit LED display. Designed for easy DIY integration, it offers real-time temperature monitoring and automated on/off control via an onboard relay, making it ideal for HVAC, heating, and cooling applications without any programming hassle. ## Description W1209 Mini thermostat Temperature controller is low-cost 12V Temperature controller with 7-segment display and 3 switch keypad for setting temperature and other parameters. The module features an NTC thermistor temperature sensing and has an accuracy of 0.1 C. Review: Worth buying - Very useful and very good quality Review: Good - Good product it's also working in - tempreture ## Features - W1209 digital temperature controller module with display and NTC Waterproof Temperature Sensor is a 12V Temperature controller with 7-segment display. It has a 3 switch keypad for setting temperature and other parameters. The module features an NTC thermistor temperature sensing and has an accuracy of 0.1 C. - LED display | Inbuilt embedded micro-controller | NTC temperature sensor | No programming knowledge required | Onboard relay | Display current temperature | 3 digit 7 segment display - The W1209 digital temperature controller module can be used to measure and display temperature, turn any application On/Off based on temperature reading. It can be used in appliances such as fire alarm system or auto cut off electric water heater. - Dimensions: W1209(LxWxH):48x40x14mm | Cable Length:0.5 Meter ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07CRYLTVM | | Best Sellers Rank | #17,785 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #93 in Temperature Controllers | | Brand | THEMISTO | | Colour | Green | | Connectivity Technology | Wi-Fi | | Country of Origin | India | | Customer Reviews | 3.9 3.9 out of 5 stars (1,374) | | Date First Available | 1 May 2018 | | Generic Name | ROBOTICS COMPONENT | | Importer | Aptechdeals ; B-1/7 Nanhey Park Uttam Nagar New Delhi- 110059; support@aptechdeals.com ;88106-13060 | | Included Components | 1pc | | Item Dimensions LxWxH | 16 x 14 x 2 Centimeters | | Item Height | 20 Millimeters | | Item Weight | 20 g | | Item Width | 14 Centimeters | | Item model number | CTE052 | | Manufacturer | Select brands international pvt ltd. 44 pologround industrial area,Indore 452001 (M.P.), Mo: 6260171052, SunRobotics | | Model number | CTE052 | | Net Quantity | 1 Count | | Number of Memory Sticks | 1 | | Packer | Bombay Electronics, 13B Shamrao Vithal Marg, Off Lamington Road. Mumbai - 400007 | | Power Source | Battery Powered | | Product Dimensions | 16 x 14 x 2 cm; 20 g | | Special Feature | Equipment,Waterproof | | Specific Product Use | Electric Baseboard Heater | | Voltage | 12 Volts | ## Product Details - **Brand:** THEMISTO - **Product Dimensions:** 2D x 14W x 16H Centimeters - **Controller Type:** program - **Special Feature:** Equipment,Waterproof - **Colour:** Green - **Specific Uses For Product:** Electric Baseboard Heater - **Temperature Control Type:** Digital - **Connectivity Technology:** Wi-Fi - **Included Components:** 1pc - **Power Source:** Battery Powered ## Images ![Generic W1209 Digital LED DC 12V + NTC Sensor heat cool temp thermostat temperature switch Module On/Off Controller electronic Board DIY - Image 1](https://m.media-amazon.com/images/I/41DaMaVg3+L.jpg) ## Questions & Answers **Q: is it work 24 hours** A: Yes.. It works **Q: can this be useful to maintain a stable constant temperature at 20 or 25 Degree of an object on cool side of peltier module. If yes then how** A: Yes it can be used for cooling u just have to connect a pc fan with it and then long press set button then po will be displayed on te screen then click on set again and turn it to colling setting **Q: resetting is neede after power fail??** A: No need it **Q: What is the relay rating? (Appliance watts)** A: 12V DC coil, 14V DC 20A/125V AC 20A ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worth buying *by A***R on 18 August 2025* Very useful and very good quality ### ⭐⭐⭐⭐ Good *by R***I on 1 April 2026* Good product it's also working in - tempreture ### ⭐⭐⭐ Ok *by N***H on 24 January 2026* Ok ## Frequently Bought Together - Generic W1209 Digital LED DC 12V + NTC Sensor heat cool temp thermostat temperature switch Module On/Off Controller electronic Board DIY - Electronic Spices 12v Brushless 3Inch DC Cooling Fan for Pc Case,CPU Cooler, 2pcs, Black (80X80) mm - Frontier TM619H2 Digital Timer Programmable Time Switch with LCD 4 Pin (Pack of 1) --- ## 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.pl/products/120963690-generic-w1209-digital-led-dc-12v-ntc-sensor-heat-cool](https://www.desertcart.pl/products/120963690-generic-w1209-digital-led-dc-12v-ntc-sensor-heat-cool) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-24*