---
product_id: 136026970
title: "ARCELI 12V 20A W3230 LCD Digital Thermostat Controller Regulator Regulator Alarm High Temperature"
brand: "arceli"
price: "AR$73524"
currency: ARS
in_stock: true
reviews_count: 11
category: "Arceli"
url: https://www.desertcart.com.ar/products/136026970-arceli-12v-20a-w3230-lcd-digital-thermostat-controller-regulator-regulator
store_origin: AR
region: Argentina
---

# 20A relay switching capacity Temp range -55°C to 120°C Dual-color LCD for heating/cooling mode ARCELI 12V 20A W3230 LCD Digital Thermostat Controller Regulator Regulator Alarm High Temperature

**Brand:** arceli
**Price:** AR$73524
**Availability:** ✅ In Stock

## Summary

> 🌡️ Stay cool or heat up — control your climate like a pro!

## Quick Answers

- **What is this?** ARCELI 12V 20A W3230 LCD Digital Thermostat Controller Regulator Regulator Alarm High Temperature by arceli
- **How much does it cost?** AR$73524 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/136026970-arceli-12v-20a-w3230-lcd-digital-thermostat-controller-regulator-regulator)

## Best For

- arceli enthusiasts

## Why This Product

- Trusted arceli brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Customizable Limits:** Set upper and lower temperature thresholds to avoid accidents and ensure peace of mind.
- • **Dual-Mode Operation:** Seamlessly switch between heating and cooling modes with a clear, intuitive LCD display.
- • **Reliable Data Backup:** Memory retention safeguards your settings even during power interruptions.
- • **Safety-First Alarm System:** Instant high-temperature alerts prevent costly overheating and equipment damage.
- • **Precision Temperature Control:** Maintain your environment within ±0.1°C accuracy for flawless climate management.

## Overview

The ARCELI 12V 20A W3230 LCD Digital Thermostat Controller offers precise temperature regulation from -55°C to 120°C with 0.1°C accuracy. Featuring a dual-color LCD for easy mode selection between heating and cooling, it includes a high-temperature alarm and customizable safety limits. Powered by a 12V supply and equipped with a 20A relay (note: relay rating is AC only, max 7A), it supports data backup to retain settings during outages, making it ideal for controlled environments like aquariums, garages, or battery chargers.

## Description

Description Can select cooling or heating mode of operation. Set the lowest/lowest upper limit to avoid accidents. Automatically start cooling or heating for a constant temperature. Temperature calibration, you can calibrate the temperature according to needs. High temperature alarm, when the measured temperature reaches the setting temperature, the controller will trigger an alarm. Specification: Temperature range: -55-120. Control temperature accuracy: 0.1. Display color: red and blue. Power supply: 12 V. Data backup: yes. Relay: 20A. Dimensions: 79 x 43 x 26 mm. Hole size: 74 x 39 mm. Note: There may be a little color distortion due to different computer resolutions. Size errors may occur due to different computer resolutions. Package includes: 1 x Digital Temperature Controller 1 x Temperature Sensor

Review: Avoid if you value your safety!!!! - Product rating is grossly overstated and is therefore, frankly, downright dangerous! It is described as a 12V unit and capable of relay switching up to a 20 Amp load, however, the actual relay inside the unit is rated at 5A (7 A Max) @ 250V AC. The relay has no DC switching rating! Anyone who knows anything about relays knows that switching DC loads is much harder on a relay than switching AC loads. The internal relay is rated at only 25% of the claimed capacity and for AC only. A 20 Amp load would cause this relay to overheat and fail, running the risk of setting fire to the equipment used with it and possibly burning down your house!
Review: ARCELI 12V 20A W3230 LCD Digital Thermostat Controller 23 December 2019 - I have had this for a project for years, never got around to the project. Now looking at using it for cooling/heating/ventilation for garage & power/battery charger. Hope this helps others in their setup. Look up: Twins Chip W3230 Digital Microcomputer Temperature Controller. Usage method: After connecting the power supply and equipment, power can be supplied to the controller. At this time, the display shows the measured temperature. Press the SET button once, and the display screen temperature will flash. (Note: You have to be very quick, otherwise the display returns to previous) Press+ - to set the required temperature (press and hold+ - to quickly rise and fall). After the setting is completed, press the SET button to confirm and return. At this time, the controller will automatically execute the relay on/off according to the setting! The output of the temperature controller is a 7A relay, which meets various high-power loads. After connecting the control circuit, the temperature controller can be powered, and the display screen shows the ambient temperature. Strongly suggest adding an 8 or 11 pin relay for controlling mains voltages. Status description of indicator light and Nixie tube: Indicator light: flashing indicates a delay in starting cooling or heating, and a constant light indicates that the relay is closed Display: Relay light (Top RHS corner) indicates that the sensor is open circuit, please connect the sensor according to the instructions; The display HH indicates that the temperature controller will forcibly disconnect the relay if it exceeds the measurement range; Display - - High temperature alarm. Parameter Function Description: Press and hold SET for 5 seconds to enter the main menu settings. Press+- to switch between P0... P6. Press and hold SET for 10 seconds or the controller will automatically confirm and return without any button action. P0 cooling and heating modes: Press and hold SET for 5 seconds to display P0. Press and hold SET once to set the working mode. Press+- to switch between [H for heating mode] and [C for cooling mode]. Press and hold SET once to return. Press and hold SET for 10 seconds or the controller will automatically confirm the completion of no button action. In refrigeration mode: when the temperature measurement value is ≥ the temperature set point, the refrigeration relay is engaged and the refrigerator starts; When the temperature measurement value is ≤ the temperature set point return difference, the refrigeration relay is disconnected and the refrigerator is turned off. In heating mode: when the temperature measurement value is ≤ the temperature set point, the heating relay is engaged and the heater starts; When the temperature measurement value is ≥ the temperature set point+return difference, the heating relay is disconnected and the heater is turned off. P1 return difference setting: Press and hold SET for 5 seconds to display P0, press+- to switch to P1, press SET once to set the return difference, press+- to set the return difference to 0.1-15, and then press SET once to return. Press and hold SET for 10 seconds or the controller will automatically confirm the completion of the keyless action. In refrigeration mode: when the temperature measurement value is ≥ the set value, the relay is engaged and the refrigerator starts; When the temperature measurement value is less than or equal to the set value return difference, the relay is disconnected and the refrigerator is turned off. For example, if the environment is set to 30 ℃ and the temperature difference is set to 25 ℃, the relay will close and the refrigerator will start after being powered on. When the cooling reaches 23 ℃, the relay will disconnect and the refrigerator will close. At this time, as the refrigerator has already been disconnected, the temperature will start to rise. When the temperature rises to the set value of 25 ℃, the relay will close and the refrigerator will start again, and the temperature will be controlled repeatedly to not exceed 25 ℃. In heating mode: when the temperature measurement value is ≤ the set value, the relay is engaged and the heater starts; When the temperature measurement value is ≥ the set value+return difference, the relay is disconnected and the heater is turned off. For example, when the environment is set to 10 ℃ and the value is set to 25 ℃, the return difference is set to 2 ℃. After being powered on, the relay closes and the heater starts to start. When the heating reaches 27 ℃, the relay disconnects and the heater turns off. At this time, the temperature starts to decrease because the heater has already been disconnected. When the setting value is 25 ℃, the relay closes and the heater starts again. This repeatedly controls the temperature not to be lower than 25 ℃.

## Features

- High temperature alarm, when the temperature reaches the setting temperature, the controller will trigger an alarm
- Temperature calibration, you can calibrate the temperature as needed
- W3230 regulator, automatically starts cooling or heating for constant temperature
- Temperature controller, adjust the upper / minimum limit to avoid accidents
- LCD digital thermostat can select cooling or heating operation mode

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07RHDS2RN |
| Best Sellers Rank | 208,397 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 486 in Temperature Controllers |
| Customer Reviews | 4.2 4.2 out of 5 stars (719) |
| Date First Available | 3 May 2019 |
| Item model number | 00546 |
| Manufacturer | ARCELI |
| Part number | 00546 |
| Power source type | Corded Electric |
| Product Dimensions | 2.6 x 4.3 x 2.6 cm; 30 g |

## Product Details

- **Brand:** ARCELI
- **Colour:** Blue|green|grey
- **Connectivity technology:** Wi-Fi
- **Controller type:** Mechanical knob
- **Included components:** Digital Temperature Controller, Temperature Sensor
- **Model name:** W3230
- **Product dimensions:** 26D x 43W x 26H millimetres
- **Special feature:** Alarm bei hohen Temperaturen
- **Specific uses for product:** Klimaanlage, Heizung
- **Temperature Control Type:** Manual

## Images

![ARCELI 12V 20A W3230 LCD Digital Thermostat Controller Regulator Regulator Alarm High Temperature - Image 1](https://m.media-amazon.com/images/I/31HacyVv3tL.jpg)
![ARCELI 12V 20A W3230 LCD Digital Thermostat Controller Regulator Regulator Alarm High Temperature - Image 2](https://m.media-amazon.com/images/I/31fkHMVPvVL.jpg)
![ARCELI 12V 20A W3230 LCD Digital Thermostat Controller Regulator Regulator Alarm High Temperature - Image 3](https://m.media-amazon.com/images/I/41-4m0s8FeL.jpg)
![ARCELI 12V 20A W3230 LCD Digital Thermostat Controller Regulator Regulator Alarm High Temperature - Image 4](https://m.media-amazon.com/images/I/41U1uxBx0eL.jpg)
![ARCELI 12V 20A W3230 LCD Digital Thermostat Controller Regulator Regulator Alarm High Temperature - Image 5](https://m.media-amazon.com/images/I/41c2lztJ-2L.jpg)

## Questions & Answers

**Q: Is there a user manual?**
A: No manual but is straightforward

**Q: The power supply, is it dc or ac please**
A: 12vdc

**Q: Hello, what is the length of the temperature sensor cable, thanks**
A: Hi Peter,

The sensor is PT100 type with a 600 to 800mm lead length, I extended the lead on all five units I received wit no issues, if it is to be long length then adjust the setting to suit any temp difference. ALL FIVE UNITS THAT I HAVE ALL WORK FINE AND EASY TO SET UP.
Philip

**Q: hi cant get this to work everything comes on but no output**
A: Is a input and output

## Customer Reviews

### ⭐ Avoid if you value your safety!!!!
*by G***N on 4 August 2020*

Product rating is grossly overstated and is therefore, frankly, downright dangerous! It is described as a 12V unit and capable of relay switching up to a 20 Amp load, however, the actual relay inside the unit is rated at 5A (7 A Max) @ 250V AC. The relay has no DC switching rating! Anyone who knows anything about relays knows that switching DC loads is much harder on a relay than switching AC loads. The internal relay is rated at only 25% of the claimed capacity and for AC only. A 20 Amp load would cause this relay to overheat and fail, running the risk of setting fire to the equipment used with it and possibly burning down your house!

### ⭐⭐⭐⭐ ARCELI 12V 20A W3230 LCD Digital Thermostat Controller 23 December 2019
*by A***. on 31 July 2025*

I have had this for a project for years, never got around to the project. Now looking at using it for cooling/heating/ventilation for garage & power/battery charger. Hope this helps others in their setup. Look up: Twins Chip W3230 Digital Microcomputer Temperature Controller. Usage method: After connecting the power supply and equipment, power can be supplied to the controller. At this time, the display shows the measured temperature. Press the SET button once, and the display screen temperature will flash. (Note: You have to be very quick, otherwise the display returns to previous) Press+ - to set the required temperature (press and hold+ - to quickly rise and fall). After the setting is completed, press the SET button to confirm and return. At this time, the controller will automatically execute the relay on/off according to the setting! The output of the temperature controller is a 7A relay, which meets various high-power loads. After connecting the control circuit, the temperature controller can be powered, and the display screen shows the ambient temperature. Strongly suggest adding an 8 or 11 pin relay for controlling mains voltages. Status description of indicator light and Nixie tube: Indicator light: flashing indicates a delay in starting cooling or heating, and a constant light indicates that the relay is closed Display: Relay light (Top RHS corner) indicates that the sensor is open circuit, please connect the sensor according to the instructions; The display HH indicates that the temperature controller will forcibly disconnect the relay if it exceeds the measurement range; Display - - High temperature alarm. Parameter Function Description: Press and hold SET for 5 seconds to enter the main menu settings. Press+- to switch between P0... P6. Press and hold SET for 10 seconds or the controller will automatically confirm and return without any button action. P0 cooling and heating modes: Press and hold SET for 5 seconds to display P0. Press and hold SET once to set the working mode. Press+- to switch between [H for heating mode] and [C for cooling mode]. Press and hold SET once to return. Press and hold SET for 10 seconds or the controller will automatically confirm the completion of no button action. In refrigeration mode: when the temperature measurement value is ≥ the temperature set point, the refrigeration relay is engaged and the refrigerator starts; When the temperature measurement value is ≤ the temperature set point return difference, the refrigeration relay is disconnected and the refrigerator is turned off. In heating mode: when the temperature measurement value is ≤ the temperature set point, the heating relay is engaged and the heater starts; When the temperature measurement value is ≥ the temperature set point+return difference, the heating relay is disconnected and the heater is turned off. P1 return difference setting: Press and hold SET for 5 seconds to display P0, press+- to switch to P1, press SET once to set the return difference, press+- to set the return difference to 0.1-15, and then press SET once to return. Press and hold SET for 10 seconds or the controller will automatically confirm the completion of the keyless action. In refrigeration mode: when the temperature measurement value is ≥ the set value, the relay is engaged and the refrigerator starts; When the temperature measurement value is less than or equal to the set value return difference, the relay is disconnected and the refrigerator is turned off. For example, if the environment is set to 30 ℃ and the temperature difference is set to 25 ℃, the relay will close and the refrigerator will start after being powered on. When the cooling reaches 23 ℃, the relay will disconnect and the refrigerator will close. At this time, as the refrigerator has already been disconnected, the temperature will start to rise. When the temperature rises to the set value of 25 ℃, the relay will close and the refrigerator will start again, and the temperature will be controlled repeatedly to not exceed 25 ℃. In heating mode: when the temperature measurement value is ≤ the set value, the relay is engaged and the heater starts; When the temperature measurement value is ≥ the set value+return difference, the relay is disconnected and the heater is turned off. For example, when the environment is set to 10 ℃ and the value is set to 25 ℃, the return difference is set to 2 ℃. After being powered on, the relay closes and the heater starts to start. When the heating reaches 27 ℃, the relay disconnects and the heater turns off. At this time, the temperature starts to decrease because the heater has already been disconnected. When the setting value is 25 ℃, the relay closes and the heater starts again. This repeatedly controls the temperature not to be lower than 25 ℃.

### ⭐⭐⭐ works
*by M***R on 23 January 2022*

it does work once you get used to controls -no instructions- youitube good demo- fyi press 1st button 4 times to get into menu

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-03-11*