--- product_id: 226331276 title: "W3230 20A DC 12V" brand: "aideepen" price: "฿1481" currency: THB in_stock: true reviews_count: 13 category: "Aideepen" url: https://www.desertcart.co.th/products/226331276-w3230-20a-dc-12v store_origin: TH region: Thailand --- # 20A max current 0.5s refresh rate Accurate ±0.1°C temp control W3230 20A DC 12V **Brand:** aideepen **Price:** ฿1481 **Availability:** ✅ In Stock ## Summary > 🌡️ Take control of your climate like a pro — precision meets power! ## Quick Answers - **What is this?** W3230 20A DC 12V by aideepen - **How much does it cost?** ฿1481 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/226331276-w3230-20a-dc-12v) ## Best For - aideepen enthusiasts ## Why This Product - Trusted aideepen brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rapid Response Time:** Updates every 0.5 seconds to keep conditions perfectly stable - • **Dual Mode Flexibility:** Seamlessly switch between heating & cooling to fit any environment - • **Smart Delay & Calibration:** Protect your devices with start delay & fine-tune temp accuracy - • **Customizable Safety Alerts:** Set max/min temp alarms to prevent costly mishaps - • **Precision Temperature Mastery:** Ultra-accurate 0.1°C measurement for flawless climate control ## Overview The Aideepen W3230 is a compact, 12V digital thermostat designed for precise temperature regulation from -55°C to 120°C with 0.1°C accuracy. Supporting both heating and cooling modes, it features a fast 0.5-second refresh rate, customizable alarms, temperature calibration, and start delay functions. Ideal for professional-grade applications requiring reliable, adaptable climate control with a 20A max load capacity. ## Description Product Description 10 Functions/Parameter Settings P0: °C/°F switch P1: Cooling/Heating switch P2: Hysteresis setting 0.1–30°C P3: Maximum temperature setting, upper limit 120°C P4: Minimum temperature limit -55°C P5: Temperature correction P6: Delay start time (unit: minutes) 0–10 min P7: Alarm temperature setting -55–120°C P8: Data lock function ON/OFF P9: Reset to factory settings (For detailed operation, refer to the instruction manual) Application 1. Select a wiring method to connect the power supply and the device to power the controller. The measured temperature will then be displayed on the screen. 2. Press the SET button once; the temperature on the display will flash. Press the ↑↓ buttons to set the desired temperature (press and hold the ↑↓ button to quickly increase or decrease the temperature). After setting, press SET to confirm and return. At this point, the controller will automatically turn the relay on and off according to the setting. For more detailed function settings, please refer to the user manual. Temperature calibration/start delay function Temperature Calibration If the measured temperature deviates from the actual temperature or the user has special hardware requirements, this function can be used for correction. The corrected temperature = the temperature before correction + the correction value (the effective range is -7.0 to 7.0). For example, the normal display is 25°C: If the temperature correction is 0, 25°C is displayed; if the temperature correction is 1.5, 26.5°C is displayed. If the temperature correction is -1.5, 23.5°C is displayed. Start Delay Function If the operation of the refrigerator or heater needs to be delayed, the delay function can be activated to protect the lifespan of the device. Peration Guide 1.Click "set", the small digital tube Bashes, press the up and down keys toset the temperature, press the "standby- key or no operation within3 seconds to save the settings. 2.Long press the "SET" key to enter the code setting mode, press the upand down keys to switch the code, click the "SET" key to adjust thecode parameters after selecting the code, press the "standby" keyor no operation within 3 seconds to save the settings. 3.Automatically save the last setting after power off, and continueworking after power on. 4.Press and hold the "SET" key to power on the product to restore thefactory settings. 5. When the product is powered on, it will automatically start running.ln the running state, iong press the "Standby" button to stand byor wake up. Please refer to the instruction manual for detailed function settings. Review: Wiring up the controller - After a shaky start due to total lack of instruction, I was about to give up when I found the attached diagram. Basically, I had just wired the 12v supply directly to VCC & GND which did supply the power for the controller. It allowed me to program everything etc. Try as I might, having connected my fridge vent fans directly to S1 & S2, I could not get the fans to work? I assumed, wrongly, that a ‘bridge’ was built into the PCB? Not the case, so wired like the schematic shows, had all up and running in no time! Very pleased overall, can’t comment on longevity of the unit but for the price, a good solution to help keep my fridge running efficiently. The manufacturer also has a website if you search this product description which has a lot more info on setting up all the parameters. Review: Works OK but a couple of cautions - Does what it is supposed to do but I have a few comments. The instructions show two diagrams for connecting a 12V load and an AC mains load. These are labelled the wrong way round which could be dangerous for anyone who doesn't know what they are doing. The specified load is 20A but the connectors are small for the cables that would be advisable for that rating. 1.5 mm2 is about the maximum size that will fit. ## Features - ✔ Temperature controller system power input: DC 12V; temperature control range: -55°C to 120°C; temperature measurement accuracy: 0.1°C; refresh rate: approximately 0.5s. Sensor wire: 1 meter - ✔ Dimensions: 79*43*26mm; cutout dimensions: 76*39mm. Manual download: Please enter all characters enclosed in brackets (http://8.217.75.21/Industrial/Multilingual/CBAA0029-018_UK.pdf) - ✔ Multiple Functions: Selectable cooling or heating operating mode, with a °C/°F switch function, adaptable to different scenarios. P0-P9 has 10 parameter/function settings. (Note: Please contact us if you have any questions.) - ✔ Cooling/Heating: After setting parameters such as heating/cooling mode, start temperature, and temperature differential according to the manual, the device automatically controls the cooling/heating function when the set conditions are met. - ✔ Temperature Calibration: If the temperature controller's measured temperature deviates, the temperature can be calibrated as needed for accurate temperature control. - ✔ Alarm function: When the temperature reaches the set temperature, the controller will alarm (-55~120℃). You can also set the maximum/minimum upper limit temperature to avoid accidents. (For more functions, please refer to the detailed description or instruction manual) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08DD9LNZL | | Best Sellers Rank | 4,661 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 2 in Temperature Controllers | | Brand | Aideepen | | Colour | 1Pack W3230 12V | | Country Of Origin | China | | Customer Reviews | 4.2 out of 5 stars 403 Reviews | | Included Components | W3230 Digital Temperature Controller*1 + Instruction Manual*1 | | Item Weight | 50 Grams | | Item weight | 50 Grams | | Manufacturer | Aideepen | | Manufacturer Part Number | A7012442 | | Material | Polycarbonate (PC) | | UPC | 782940081775 | | Voltage | 12 Volts | ## Product Details - **Brand:** Aideepen - **Colour:** 1Pack W3230 12V - **Item weight:** 50 Grams - **Material:** Polycarbonate (PC) - **Voltage:** 12 Volts ## Images ![W3230 20A DC 12V - Image 1](https://m.media-amazon.com/images/I/61jx+jFUeQL.jpg) ![W3230 20A DC 12V - Image 2](https://m.media-amazon.com/images/I/7121ZaJolhL.jpg) ![W3230 20A DC 12V - Image 3](https://m.media-amazon.com/images/I/61W7LnypZxL.jpg) ![W3230 20A DC 12V - Image 4](https://m.media-amazon.com/images/I/61NAHI1aD9L.jpg) ![W3230 20A DC 12V - Image 5](https://m.media-amazon.com/images/I/61am2prjCqL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: How long will the settings be retained when the power is taken off?** A: You can safe the settings by turning P7 ON **Q: Can I use this controller to switch a 250v ac aquarium heater? Thanks in advance** A: The relay should be able to handle that providing the heater doesn't draw more than 10A, which I imagine it doesn't as it would turn your aquarium into a kettle. Be aware that this unit is powered from a 12V supply. You can buy similar units that can be powered from the mains (such as https://www.amazon.co.uk/dp/B089RKGW5C/) if you don't want/have a separate power supply. **Q: Will it keep the settings if the power is cut** A: I disconnect this when charging up the car battery to which it is connected. The settings are retained during this time. **Q: Can you set a hysteresis value for the SET temperature (so the output stays on until temperature drops below the hysteresis)?** A: No. This is a simple switch on switch of the heater once the set desired temperature is set. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Wiring up the controller *by B***A on 22 June 2023* After a shaky start due to total lack of instruction, I was about to give up when I found the attached diagram. Basically, I had just wired the 12v supply directly to VCC & GND which did supply the power for the controller. It allowed me to program everything etc. Try as I might, having connected my fridge vent fans directly to S1 & S2, I could not get the fans to work? I assumed, wrongly, that a ‘bridge’ was built into the PCB? Not the case, so wired like the schematic shows, had all up and running in no time! Very pleased overall, can’t comment on longevity of the unit but for the price, a good solution to help keep my fridge running efficiently. The manufacturer also has a website if you search this product description which has a lot more info on setting up all the parameters. ### ⭐⭐⭐⭐ Works OK but a couple of cautions *by M***. on 6 January 2026* Does what it is supposed to do but I have a few comments. The instructions show two diagrams for connecting a 12V load and an AC mains load. These are labelled the wrong way round which could be dangerous for anyone who doesn't know what they are doing. The specified load is 20A but the connectors are small for the cables that would be advisable for that rating. 1.5 mm2 is about the maximum size that will fit. ### ⭐⭐⭐⭐⭐ Great fan controller *by C***. on 4 August 2025* Works excellent controlling fans in the caravan fridge in hot weather set at 39° with a 4° waiting works perfect ## Frequently Bought Together - Aideepen W3230 20A 12V Digital Thermostat Digital Temperature Controller Regulator Heating Cooling Control Thermometer Instrument - VIABRICO 14AWG 100FT Electrical Wire Cable 2 Conductors Red Black Cable Hookup LED Lighting Strips Flexible Wire Extension Cord 14 Gauge Copper Clad Aluminum Copper Wire 12V/24V DC Cable --- ## 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.co.th/products/226331276-w3230-20a-dc-12v](https://www.desertcart.co.th/products/226331276-w3230-20a-dc-12v) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-08-12*