---
product_id: 17191216
title: "DC 12V"
brand: "bayite"
price: "€ 34.32"
currency: EUR
in_stock: null
reviews_count: 10
category: "Bayite"
url: https://www.desertcart.it/products/17191216-dc-12v
store_origin: IT
region: Italy
---

# 3m waterproof NTC 10K sensor Dual mode relay: heat & cool ±0.1°F precision temp control DC 12V

**Brand:** bayite
**Price:** € 34.32
**Availability:** ❌ Out of Stock

## Summary

> 🌡️ Stay cool or heat up — control your climate like a pro, no sweat!

## Quick Answers

- **What is this?** DC 12V by bayite
- **How much does it cost?** € 34.32 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/17191216-dc-12v)

## Best For

- bayite enthusiasts

## Why This Product

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

## Key Features

- • **Smart Safety Alarms:** High/low temp alerts and compressor delay protect your equipment from costly damage.
- • **Plug-and-Play Simplicity:** Intuitive digital display with °F support and memory retention for hassle-free setup.
- • **Versatile Dual-Mode Relay:** Seamlessly switch between heating and cooling modes to suit any setup or device.
- • **Long-Range Waterproof Sensor:** 3-meter probe ensures accurate readings even in challenging or wet environments.
- • **Precision Temperature Mastery:** Maintain your environment within a razor-sharp ±0.1°F range for ultimate control.

## Overview

The bayite DC 12V Digital Temperature Controller offers precise temperature regulation with a 10A relay supporting both heating and cooling modes. Featuring a 3-meter waterproof NTC 10K sensor, it delivers accurate readings from -4°F to 230°F. Designed for easy setup with a clear digital display and safety alarms, it’s perfect for managing temperature-sensitive environments in automotive, aquarium, or industrial applications.

## Description

bayite DC 12V Fahrenheit Digital Temperature Controller 10A 1 Relay with NTC 10K Sensor: desertcart.com: Industrial & Scientific

Review: Easy to wire, easy (sort of) to program - This is exactly as described and worked perfectly the very first time I wired it up. Use case: I had a car audio amplifier under my rear hatch floorboard powering a subwoofer, I think it had far too many overheating cut-outs until it gave up. I replaced that with a larger amp to now power TWO subwoofers, one remained under the floor and the other is in the open area in the back. I installed a 12vdc brushless fan to blow on the underside of the amp, and when I first got everything running, I noticed the fan is a LOT louder than I had hoped, so I bought this temperature switch. I wired it up so that the power to the fan instead went to the temp switch, then the unit's switched leads supplied the (+) 12vdc to the fan. I changed the settings for this video to show what happens when setting "d" is at 2°F and the target temperature is 73°F ... The amp's temp slowly crept up to [Target]+[d] and the fan kicked on and I watched the temp drop to 72.8°F before the fan kicked off. I then let it cycle through one more time to 75°F, fan kicked on, temp continued to creep up to 75.2°F before starting to fall back down, to 72.8°F and fan turned off. That was proof enough that this thing does exactly what I intend, and I now have it set to kick on at 100°F and run until the temp probe reaches 94.9°F (target = 95° and d = 5). The only complaint I have is that the programming is a little convoluted. I did not explore any settings beyond Target, d, and mode = C (for cooling, opposite of H which is designed to switch on a heater to get temps up when the probe gets too cold). I will update this if the unit fails within the first year of use.
Review: Works for radiator fans. - This thing is exactly what I was hoping it was. I installed it as a cooling fan thermostat for my pickup. Of course, the internal relay shouldn't be loaded with an 80 watt fan, so I needed an additional relay to set everything up correctly. It reads down to tenths of a degree. The lead for the temperature probe that came with it was plenty long enough to run from inside the cab on the driver's side to the opposite side of the radiator. I wired it up as a ground side switch to reduce wire counts on long runs. I've probably used 5 "automotive" adjustable electric thermostats in as many years, one of each brand I could find. This setup has so far outlasted 3 of them. Doesn't seem to be as sensitive to voltage fluctuations, has a digital readout, and cost less than $20. Of course, this isn't meant to run an automotive cooling fan, and doesn't have an input for the A/C fan like the others do, and requires more complex wiring. Anyways, can be set to run a heater (on when cold, off when hot), a cooler (on when hot, off when cold) adjustable delta T, adjustable trigger temperature (whole degrees), and a warning for too hot/cold (flashing display, no sound). Also, it retains settings when disconnected from power. Update: 6-15-18 Still going strong, and I’ve had absolutely 0 problems. Works much better than everything else I’ve tried, and I only have it zip tied to the bottom side of the dash. Plenty enough vibration resistance.

## Features

- Simplified Design---Easy to set. Support °F display. NTC 10K Sensor Probe.
- One Relay Output---Switch between heating mode and refrigeration mode according to the device you plug into the controller. Maximum output load: 1100W(110V)
- Safe Protection---High and low temperature alarms are available when the temperature overshoots your desired temperature. Compressor delay protection time setting and Temperature calibration
- Warranty---1 year warranty.
- Package contents: A DC 12V temperature controller , comes with a 3m(9.8ft) waterproof probe sensor (Measure range is -4 ~ 230°F), and a user manual.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B011VGAPOC |
| Batteries required | No |
| Best Sellers Rank | #46,659 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #69 in Temperature Controllers |
| Customer Reviews | 4.5 4.5 out of 5 stars (446) |
| Display Type | Digital |
| Is Discontinued By Manufacturer | No |
| Item Weight | 5 ounces |
| Item model number | CECOMINOD034943 |
| Operating Temperature | 230 Degrees Fahrenheit |
| Product Dimensions | 3.4 x 3 x 1.4 inches |

## Product Details

- **Brand:** bayite
- **Color:** black,red
- **Item Weight:** 0.31 Pounds
- **Product Dimensions:** 3.4"L x 3"W x 1.4"H
- **Voltage:** 12 Volts

## Images

![DC 12V - Image 1](https://m.media-amazon.com/images/I/51VsoXIyTnL.jpg)
![DC 12V - Image 2](https://m.media-amazon.com/images/I/51IEcO2l81L.jpg)
![DC 12V - Image 3](https://m.media-amazon.com/images/I/71grQ+WgMFL.jpg)
![DC 12V - Image 4](https://m.media-amazon.com/images/I/71QT514m34L.jpg)
![DC 12V - Image 5](https://m.media-amazon.com/images/I/511bwdIaNHL.jpg)

## Questions & Answers

**Q: Can the sensor be submerged in a water tank to read water temperature?**
A: I sealed the sensor at the end of the wire inside a 4-inch length of heat-shrink tubing and sealed the ends with silicone.  I use mine to turn a heating element on/off during the winter to keep a small livestock water tank from freezing.

**Q: can the sensor wires be lengthened**
A: Simple answers: It uses an 10K NTC sensor that can be lengthened up to 100 feet with 18 gauge (AWG) SHIELDED wire. Up to 10 feet non-shielded.

**Q: Can you turn it on and off?**
A: Yes. You can turn it on and off. Press the button "Rst" to turn it on/off.

**Q: How do I switch between cold and hot mode**
A: Just change the HC value. HC=H for Heating Mode. HC=C for Cooling Mode
1.Press SET for 3 secs, HC appears on screen, release SET button
2.Press SET once to enter HC parameter
3.Press UP/DOWN button to select C or H, Press SET once again and back to HC(main menu)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to wire, easy (sort of) to program
*by F***E on October 25, 2023*

This is exactly as described and worked perfectly the very first time I wired it up. Use case: I had a car audio amplifier under my rear hatch floorboard powering a subwoofer, I think it had far too many overheating cut-outs until it gave up. I replaced that with a larger amp to now power TWO subwoofers, one remained under the floor and the other is in the open area in the back. I installed a 12vdc brushless fan to blow on the underside of the amp, and when I first got everything running, I noticed the fan is a LOT louder than I had hoped, so I bought this temperature switch. I wired it up so that the power to the fan instead went to the temp switch, then the unit's switched leads supplied the (+) 12vdc to the fan. I changed the settings for this video to show what happens when setting "d" is at 2°F and the target temperature is 73°F ... The amp's temp slowly crept up to [Target]+[d] and the fan kicked on and I watched the temp drop to 72.8°F before the fan kicked off. I then let it cycle through one more time to 75°F, fan kicked on, temp continued to creep up to 75.2°F before starting to fall back down, to 72.8°F and fan turned off. That was proof enough that this thing does exactly what I intend, and I now have it set to kick on at 100°F and run until the temp probe reaches 94.9°F (target = 95° and d = 5). The only complaint I have is that the programming is a little convoluted. I did not explore any settings beyond Target, d, and mode = C (for cooling, opposite of H which is designed to switch on a heater to get temps up when the probe gets too cold). I will update this if the unit fails within the first year of use.

### ⭐⭐⭐⭐⭐ Works for radiator fans.
*by R***4 on June 4, 2016*

This thing is exactly what I was hoping it was. I installed it as a cooling fan thermostat for my pickup. Of course, the internal relay shouldn't be loaded with an 80 watt fan, so I needed an additional relay to set everything up correctly. It reads down to tenths of a degree. The lead for the temperature probe that came with it was plenty long enough to run from inside the cab on the driver's side to the opposite side of the radiator. I wired it up as a ground side switch to reduce wire counts on long runs. I've probably used 5 "automotive" adjustable electric thermostats in as many years, one of each brand I could find. This setup has so far outlasted 3 of them. Doesn't seem to be as sensitive to voltage fluctuations, has a digital readout, and cost less than $20. Of course, this isn't meant to run an automotive cooling fan, and doesn't have an input for the A/C fan like the others do, and requires more complex wiring. Anyways, can be set to run a heater (on when cold, off when hot), a cooler (on when hot, off when cold) adjustable delta T, adjustable trigger temperature (whole degrees), and a warning for too hot/cold (flashing display, no sound). Also, it retains settings when disconnected from power. Update: 6-15-18 Still going strong, and I’ve had absolutely 0 problems. Works much better than everything else I’ve tried, and I only have it zip tied to the bottom side of the dash. Plenty enough vibration resistance.

### ⭐⭐⭐⭐ Great little thermostat
*by T***G on August 1, 2024*

I use this to run some basic ventilation fans in an electrical closet and it works great. Hard to beat for the price.

## Frequently Bought Together

- bayite DC 12V Fahrenheit Digital Temperature Controller 10A 1 Relay with NTC 10K Sensor
- irhapsody 4-PIN 40/30AMP 12V DC Waterproof Relay with Harness - Heavy Duty 12 AWG Tinned Copper Wires, 1 Pack SPST Automotive Relay
- Blue Sea Systems DualBus 100A Common BusBars

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-02-15*