---
product_id: 167358510
title: "– H843730 SUNWAN Capillary Car Thermostat Cooling Radiator Fan Control Switch Universal Adjustable 0-120 degreeC Heating/Cooling Mechanical Thermostat,Black, Silver"
brand: "sanwan"
price: "1702446₫"
currency: VND
in_stock: true
reviews_count: 8
category: "Sanwan"
url: https://www.desertcart.vn/products/167358510-h843730-sunwan-capillary-car-thermostat-cooling-radiator-fan-control-switch
store_origin: VN
region: Vietnam
---

# 12V power compatibility Universal fit, easy install 0-120°C adjustable range – H843730 SUNWAN Capillary Car Thermostat Cooling Radiator Fan Control Switch Universal Adjustable 0-120 degreeC Heating/Cooling Mechanical Thermostat,Black, Silver

**Brand:** sanwan
**Price:** 1702446₫
**Availability:** ✅ In Stock

## Summary

> 🌡️ Stay Cool, Drive Smart – The Thermostat Your Engine Deserves!

## Quick Answers

- **What is this?** – H843730 SUNWAN Capillary Car Thermostat Cooling Radiator Fan Control Switch Universal Adjustable 0-120 degreeC Heating/Cooling Mechanical Thermostat,Black, Silver by sanwan
- **How much does it cost?** 1702446₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/167358510-h843730-sunwan-capillary-car-thermostat-cooling-radiator-fan-control-switch)

## Best For

- sanwan enthusiasts

## Why This Product

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

## Key Features

- • **Durable Build:** Crafted with steel and silicone for long-lasting reliability under pressure.
- • **Smart Fan Activation:** Automatically triggers your radiator fan to keep your engine cool and running smoothly.
- • **Universal Compatibility:** Fits most radiator hoses with a simple probe insertion—no hassle, no stress.
- • **Energy Efficient Operation:** 12V power ensures seamless integration with your vehicle’s electrical system.
- • **Precision Temperature Control:** Fine-tune your engine cooling from 32°F to 248°F for optimal performance.

## Overview

The H843730 SUNWAN Capillary Car Thermostat is a universal, adjustable mechanical switch designed to control your radiator fan with precision. Featuring a 0-120°C temperature range, a durable steel and silicone build, and a 12V power rating, it ensures efficient engine cooling by activating the fan exactly when needed. Easy to install with a flexible probe, this thermostat is a reliable upgrade for any vehicle seeking smarter temperature management.

## Description

Universal Capillary Thermostat Cooling Radiator Engine Fan Control SwitchSpecification:Voltage: 12VMaterial: Steel+PlasticTemperature Range: 0℃～120℃Accuracy: 4±2℃Temperature Bar Length: 104mm/4.09inchTemperature Sensing Rod Diameter: 5mm/0.20inchCapillary Length: 1000mm/39.37inchPackage Included:1x Switch

Review: Fan content control - I personally like these but maybe not for everyone
Review: It’s a thermostat - It’s ok but the temperature range is not accurate it’s about 15 degrees out

## Features

- Adjustable electric fan thermostat controller w/stainless temperature probe sensor.
- Probe measures water, coolant or contact temperature and passes power to the fan.
- Flexible turn-on/turn-off temperature control range of 32-248'F (0-120'C).
- To fit in the hose simply remove the top radiator and fully insert the probe, then re fit hose and tighten over the capillary wire being extra careful not to damage the probe inside. Silicone sealant can be used to help seal if required.
- 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07ZKJ792D |
| Best Sellers Rank | 90,646 in Automotive ( See Top 100 in Automotive ) 153 in Car Engine Thermostats |
| Brand | SANWAN |
| Colour | Black, Silver |
| Customer Reviews | 4.4 4.4 out of 5 stars (43) |
| Date First Available | 25 Oct. 2019 |
| Item Weight | 100 g |
| Material | Silicone |
| Model Number | H843730 |
| Product Dimensions | 11 x 9 x 5 cm; 100 g |
| Special Features | Removable Interface |
| Voltage | 12 Volts |

## Product Details

- **Brand:** SANWAN
- **Colour:** Black, Silver
- **Connectivity technology:** Wired
- **Controller type:** Mechanical knob
- **Included components:** 1x Switch
- **Model name:** H843730
- **Power source:** Electrical Component w/ Cable
- **Special feature:** Removable Interface
- **Temperature Control Type:** Thermostatic
- **Voltage:** 12 Volts

## Images

![– H843730 SUNWAN Capillary Car Thermostat Cooling Radiator Fan Control Switch Universal Adjustable 0-120 degreeC Heating/Cooling Mechanical Thermostat,Black, Silver - Image 1](https://m.media-amazon.com/images/I/51ORQLV8KsL.jpg)

## Questions & Answers

**Q: Could I use this to switch off a device when it reaches a certain temp and switch on again when it cools?**
A: Yes, I used it to switch auxiliary 12v fans on an engine. From memory it will switch up to 20A at 240v so as long as the load you want to switch doesn't exceed the values. The switching temperatures are quite accurate for everyday use.

It has two sets of contacts, normally open and normally closed so it can either switch on a circuit or off a circuit at the set temperature.

Yes, it will switch off and on as you ask, depending on which contacts you use.

Just a note of caution, take care not to kink the sensor tube when installing it.

**Q: Hello, could i use this control the on and off temperture of a 12v heater? i.e. so the heater starts at 10'c and stops at 20'c?**
A: No this will NOT work for temperatures as low as you are suggesting.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fan content control
*by C***S on 20 August 2024*

I personally like these but maybe not for everyone

### ⭐⭐⭐ It’s a thermostat
*by P***S on 8 August 2024*

It’s ok but the temperature range is not accurate it’s about 15 degrees out

### ⭐⭐⭐⭐⭐ Time will tell 👍
*by C***S on 31 July 2024*



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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-27*